Home / 715,202.42-986,979.72-392,933.26

Finding the Fourth Proportional to 715,202.42, 986,979.72 and 392,933.26

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Solution

The fourth proportional to 715,202.42, 986,979.72 and 392,933.26 is: 542,248.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,202.42 : 986,979.72 = 392,933.26 : x
  2. Step 2: Convert to fraction form
    715,202.42/986,979.72 = 392,933.26/x
  3. Step 3: Cross multiply
    715,202.42x = 986,979.72 × 392,933.26
  4. Step 4: Simplify right side
    715,202.42x = 387,817,158,933.49
  5. Step 5: Solve for x
    x = 387,817,158,933.49/715,202.42
  6. Step 6: Final answer
    x = 542,248.11

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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.