Home / 485,553,935.62-728,420,719.88-153,644,511.21

Finding the Fourth Proportional to 485,553,935.62, 728,420,719.88 and 153,644,511.21

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Solution

The fourth proportional to 485,553,935.62, 728,420,719.88 and 153,644,511.21 is: 230,495,187.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,553,935.62 : 728,420,719.88 = 153,644,511.21 : x
  2. Step 2: Convert to fraction form
    485,553,935.62/728,420,719.88 = 153,644,511.21/x
  3. Step 3: Cross multiply
    485,553,935.62x = 728,420,719.88 × 153,644,511.21
  4. Step 4: Simplify right side
    485,553,935.62x = 111,917,845,461,198,928
  5. Step 5: Solve for x
    x = 111,917,845,461,198,928/485,553,935.62
  6. Step 6: Final answer
    x = 230,495,187.56

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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.