Home / 714,729.27-986,340.08-392,472.39

Finding the Fourth Proportional to 714,729.27, 986,340.08 and 392,472.39

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Solution

The fourth proportional to 714,729.27, 986,340.08 and 392,472.39 is: 541,619.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,729.27 : 986,340.08 = 392,472.39 : x
  2. Step 2: Convert to fraction form
    714,729.27/986,340.08 = 392,472.39/x
  3. Step 3: Cross multiply
    714,729.27x = 986,340.08 × 392,472.39
  4. Step 4: Simplify right side
    714,729.27x = 387,111,246,588.03
  5. Step 5: Solve for x
    x = 387,111,246,588.03/714,729.27
  6. Step 6: Final answer
    x = 541,619.41

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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.