Home / 628,309,936.80-942,464,905.20-197,488,432.80

Finding the Fourth Proportional to 628,309,936.80, 942,464,905.20 and 197,488,432.80

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Solution

The fourth proportional to 628,309,936.80, 942,464,905.20 and 197,488,432.80 is: 296,232,649.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,309,936.80 : 942,464,905.20 = 197,488,432.80 : x
  2. Step 2: Convert to fraction form
    628,309,936.80/942,464,905.20 = 197,488,432.80/x
  3. Step 3: Cross multiply
    628,309,936.80x = 942,464,905.20 × 197,488,432.80
  4. Step 4: Simplify right side
    628,309,936.80x = 186,125,917,096,948,576
  5. Step 5: Solve for x
    x = 186,125,917,096,948,576/628,309,936.80
  6. Step 6: Final answer
    x = 296,232,649.20

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Double scale
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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.