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Finding the Fourth Proportional to 573,404.28, 858,234.57 and 421,561.41

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Solution

The fourth proportional to 573,404.28, 858,234.57 and 421,561.41 is: 630,965.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,404.28 : 858,234.57 = 421,561.41 : x
  2. Step 2: Convert to fraction form
    573,404.28/858,234.57 = 421,561.41/x
  3. Step 3: Cross multiply
    573,404.28x = 858,234.57 × 421,561.41
  4. Step 4: Simplify right side
    573,404.28x = 361,798,575,439.94
  5. Step 5: Solve for x
    x = 361,798,575,439.94/573,404.28
  6. Step 6: Final answer
    x = 630,965.95

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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.