Home / 714,731.92-986,323.23-392,439.20

Finding the Fourth Proportional to 714,731.92, 986,323.23 and 392,439.20

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Solution

The fourth proportional to 714,731.92, 986,323.23 and 392,439.20 is: 541,562.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,731.92 : 986,323.23 = 392,439.20 : x
  2. Step 2: Convert to fraction form
    714,731.92/986,323.23 = 392,439.20/x
  3. Step 3: Cross multiply
    714,731.92x = 986,323.23 × 392,439.20
  4. Step 4: Simplify right side
    714,731.92x = 387,071,894,391.00
  5. Step 5: Solve for x
    x = 387,071,894,391.00/714,731.92
  6. Step 6: Final answer
    x = 541,562.35

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1.5x scale

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.