Home / 498,923.91-687,706.16-389,837.52

Finding the Fourth Proportional to 498,923.91, 687,706.16 and 389,837.52

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Solution

The fourth proportional to 498,923.91, 687,706.16 and 389,837.52 is: 537,343.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,923.91 : 687,706.16 = 389,837.52 : x
  2. Step 2: Convert to fraction form
    498,923.91/687,706.16 = 389,837.52/x
  3. Step 3: Cross multiply
    498,923.91x = 687,706.16 × 389,837.52
  4. Step 4: Simplify right side
    498,923.91x = 268,093,661,953.94
  5. Step 5: Solve for x
    x = 268,093,661,953.94/498,923.91
  6. Step 6: Final answer
    x = 537,343.78

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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.