Home / 1,280,451,982.13-1,766,482,654.77-857,202,008.15

Finding the Fourth Proportional to 1,280,451,982.13, 1,766,482,654.77 and 857,202,008.15

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Solution

The fourth proportional to 1,280,451,982.13, 1,766,482,654.77 and 857,202,008.15 is: 1,182,576,543.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,451,982.13 : 1,766,482,654.77 = 857,202,008.15 : x
  2. Step 2: Convert to fraction form
    1,280,451,982.13/1,766,482,654.77 = 857,202,008.15/x
  3. Step 3: Cross multiply
    1,280,451,982.13x = 1,766,482,654.77 × 857,202,008.15
  4. Step 4: Simplify right side
    1,280,451,982.13x = 1,514,232,479,022,154,752
  5. Step 5: Solve for x
    x = 1,514,232,479,022,154,752/1,280,451,982.13
  6. Step 6: Final answer
    x = 1,182,576,543.41

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Double scale
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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.