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Finding the Fourth Proportional to 649,604.32, 896,616.48 and 520,036.72

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Solution

The fourth proportional to 649,604.32, 896,616.48 and 520,036.72 is: 717,780.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,604.32 : 896,616.48 = 520,036.72 : x
  2. Step 2: Convert to fraction form
    649,604.32/896,616.48 = 520,036.72/x
  3. Step 3: Cross multiply
    649,604.32x = 896,616.48 × 520,036.72
  4. Step 4: Simplify right side
    649,604.32x = 466,273,493,357.15
  5. Step 5: Solve for x
    x = 466,273,493,357.15/649,604.32
  6. Step 6: Final answer
    x = 717,780.78

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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.