Home / 714,569.76-986,044.08-392,278.56

Finding the Fourth Proportional to 714,569.76, 986,044.08 and 392,278.56

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Solution

The fourth proportional to 714,569.76, 986,044.08 and 392,278.56 is: 541,310.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,569.76 : 986,044.08 = 392,278.56 : x
  2. Step 2: Convert to fraction form
    714,569.76/986,044.08 = 392,278.56/x
  3. Step 3: Cross multiply
    714,569.76x = 986,044.08 × 392,278.56
  4. Step 4: Simplify right side
    714,569.76x = 386,803,951,798.93
  5. Step 5: Solve for x
    x = 386,803,951,798.93/714,569.76
  6. Step 6: Final answer
    x = 541,310.27

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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.