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Finding the Fourth Proportional to 855,808,250.40, 1,283,712,375.60 and 797,987,469.60

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Solution

The fourth proportional to 855,808,250.40, 1,283,712,375.60 and 797,987,469.60 is: 1,196,981,204.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,808,250.40 : 1,283,712,375.60 = 797,987,469.60 : x
  2. Step 2: Convert to fraction form
    855,808,250.40/1,283,712,375.60 = 797,987,469.60/x
  3. Step 3: Cross multiply
    855,808,250.40x = 1,283,712,375.60 × 797,987,469.60
  4. Step 4: Simplify right side
    855,808,250.40x = 1,024,386,390,299,248,768
  5. Step 5: Solve for x
    x = 1,024,386,390,299,248,768/855,808,250.40
  6. Step 6: Final answer
    x = 1,196,981,204.40

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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.