Home / 431,794,567.96-647,693,740.28-136,691,128.71

Finding the Fourth Proportional to 431,794,567.96, 647,693,740.28 and 136,691,128.71

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Solution

The fourth proportional to 431,794,567.96, 647,693,740.28 and 136,691,128.71 is: 205,037,290.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,794,567.96 : 647,693,740.28 = 136,691,128.71 : x
  2. Step 2: Convert to fraction form
    431,794,567.96/647,693,740.28 = 136,691,128.71/x
  3. Step 3: Cross multiply
    431,794,567.96x = 647,693,740.28 × 136,691,128.71
  4. Step 4: Simplify right side
    431,794,567.96x = 88,533,988,417,949,200
  5. Step 5: Solve for x
    x = 88,533,988,417,949,200/431,794,567.96
  6. Step 6: Final answer
    x = 205,037,290.85

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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.