Home / 715,262.94-987,062.76-392,962.32

Finding the Fourth Proportional to 715,262.94, 987,062.76 and 392,962.32

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Solution

The fourth proportional to 715,262.94, 987,062.76 and 392,962.32 is: 542,287.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,262.94 : 987,062.76 = 392,962.32 : x
  2. Step 2: Convert to fraction form
    715,262.94/987,062.76 = 392,962.32/x
  3. Step 3: Cross multiply
    715,262.94x = 987,062.76 × 392,962.32
  4. Step 4: Simplify right side
    715,262.94x = 387,878,472,155.20
  5. Step 5: Solve for x
    x = 387,878,472,155.20/715,262.94
  6. Step 6: Final answer
    x = 542,287.95

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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.