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Finding the Fourth Proportional to 520,532.86, 718,337.28 and 302,793.78

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Solution

The fourth proportional to 520,532.86, 718,337.28 and 302,793.78 is: 417,856.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,532.86 : 718,337.28 = 302,793.78 : x
  2. Step 2: Convert to fraction form
    520,532.86/718,337.28 = 302,793.78/x
  3. Step 3: Cross multiply
    520,532.86x = 718,337.28 × 302,793.78
  4. Step 4: Simplify right side
    520,532.86x = 217,508,060,326.12
  5. Step 5: Solve for x
    x = 217,508,060,326.12/520,532.86
  6. Step 6: Final answer
    x = 417,856.54

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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.