Home / 1,310,257,380.60-1,965,386,070.90-1,210,488,190.20

Finding the Fourth Proportional to 1,310,257,380.60, 1,965,386,070.90 and 1,210,488,190.20

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Solution

The fourth proportional to 1,310,257,380.60, 1,965,386,070.90 and 1,210,488,190.20 is: 1,815,732,285.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,310,257,380.60 : 1,965,386,070.90 = 1,210,488,190.20 : x
  2. Step 2: Convert to fraction form
    1,310,257,380.60/1,965,386,070.90 = 1,210,488,190.20/x
  3. Step 3: Cross multiply
    1,310,257,380.60x = 1,965,386,070.90 × 1,210,488,190.20
  4. Step 4: Simplify right side
    1,310,257,380.60x = 2,379,076,628,008,030,208
  5. Step 5: Solve for x
    x = 2,379,076,628,008,030,208/1,310,257,380.60
  6. Step 6: Final answer
    x = 1,815,732,285.30

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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.