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Finding the Fourth Proportional to 520,635.68, 780,737.20 and 254,318.88

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Solution

The fourth proportional to 520,635.68, 780,737.20 and 254,318.88 is: 381,372.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,635.68 : 780,737.20 = 254,318.88 : x
  2. Step 2: Convert to fraction form
    520,635.68/780,737.20 = 254,318.88/x
  3. Step 3: Cross multiply
    520,635.68x = 780,737.20 × 254,318.88
  4. Step 4: Simplify right side
    520,635.68x = 198,556,210,278.34
  5. Step 5: Solve for x
    x = 198,556,210,278.34/520,635.68
  6. Step 6: Final answer
    x = 381,372.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.