Home / 498,925.41-687,708.23-389,839.02

Finding the Fourth Proportional to 498,925.41, 687,708.23 and 389,839.02

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Solution

The fourth proportional to 498,925.41, 687,708.23 and 389,839.02 is: 537,345.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,925.41 : 687,708.23 = 389,839.02 : x
  2. Step 2: Convert to fraction form
    498,925.41/687,708.23 = 389,839.02/x
  3. Step 3: Cross multiply
    498,925.41x = 687,708.23 × 389,839.02
  4. Step 4: Simplify right side
    498,925.41x = 268,095,500,479.94
  5. Step 5: Solve for x
    x = 268,095,500,479.94/498,925.41
  6. Step 6: Final answer
    x = 537,345.85

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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.