Home / 714,160.20-985,508.04-391,862.28

Finding the Fourth Proportional to 714,160.20, 985,508.04 and 391,862.28

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Solution

The fourth proportional to 714,160.20, 985,508.04 and 391,862.28 is: 540,751.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,160.20 : 985,508.04 = 391,862.28 : x
  2. Step 2: Convert to fraction form
    714,160.20/985,508.04 = 391,862.28/x
  3. Step 3: Cross multiply
    714,160.20x = 985,508.04 × 391,862.28
  4. Step 4: Simplify right side
    714,160.20x = 386,183,427,512.73
  5. Step 5: Solve for x
    x = 386,183,427,512.73/714,160.20
  6. Step 6: Final answer
    x = 540,751.82

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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.