Home / 714,248.78-985,675.28-391,988.85

Finding the Fourth Proportional to 714,248.78, 985,675.28 and 391,988.85

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Solution

The fourth proportional to 714,248.78, 985,675.28 and 391,988.85 is: 540,951.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,248.78 : 985,675.28 = 391,988.85 : x
  2. Step 2: Convert to fraction form
    714,248.78/985,675.28 = 391,988.85/x
  3. Step 3: Cross multiply
    714,248.78x = 985,675.28 × 391,988.85
  4. Step 4: Simplify right side
    714,248.78x = 386,373,717,520.68
  5. Step 5: Solve for x
    x = 386,373,717,520.68/714,248.78
  6. Step 6: Final answer
    x = 540,951.18

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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.