Home / 714,845.85-986,487.25-392,561.32

Finding the Fourth Proportional to 714,845.85, 986,487.25 and 392,561.32

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Solution

The fourth proportional to 714,845.85, 986,487.25 and 392,561.32 is: 541,734.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,845.85 : 986,487.25 = 392,561.32 : x
  2. Step 2: Convert to fraction form
    714,845.85/986,487.25 = 392,561.32/x
  3. Step 3: Cross multiply
    714,845.85x = 986,487.25 × 392,561.32
  4. Step 4: Simplify right side
    714,845.85x = 387,256,737,023.17
  5. Step 5: Solve for x
    x = 387,256,737,023.17/714,845.85
  6. Step 6: Final answer
    x = 541,734.61

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Double scale
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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.