Home / 509,180,257,029.60-763,770,385,544.40-210,961,076,997.60

Finding the Fourth Proportional to 509,180,257,029.60, 763,770,385,544.40 and 210,961,076,997.60

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Solution

The fourth proportional to 509,180,257,029.60, 763,770,385,544.40 and 210,961,076,997.60 is: 316,441,615,496.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,180,257,029.60 : 763,770,385,544.40 = 210,961,076,997.60 : x
  2. Step 2: Convert to fraction form
    509,180,257,029.60/763,770,385,544.40 = 210,961,076,997.60/x
  3. Step 3: Cross multiply
    509,180,257,029.60x = 763,770,385,544.40 × 210,961,076,997.60
  4. Step 4: Simplify right side
    509,180,257,029.60x = 161,125,823,113,318,809,731,072
  5. Step 5: Solve for x
    x = 161,125,823,113,318,809,731,072/509,180,257,029.60
  6. Step 6: Final answer
    x = 316,441,615,496.40

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Double scale
Find fourth proportional to 509,180,257,030.60, 763,770,385,545.90 and 210,961,076,998.60
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.