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Finding the Fourth Proportional to 572,605.70, 858,908.55 and 517,493.30

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Solution

The fourth proportional to 572,605.70, 858,908.55 and 517,493.30 is: 776,239.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,605.70 : 858,908.55 = 517,493.30 : x
  2. Step 2: Convert to fraction form
    572,605.70/858,908.55 = 517,493.30/x
  3. Step 3: Cross multiply
    572,605.70x = 858,908.55 × 517,493.30
  4. Step 4: Simplify right side
    572,605.70x = 444,479,419,937.72
  5. Step 5: Solve for x
    x = 444,479,419,937.72/572,605.70
  6. Step 6: Final answer
    x = 776,239.95

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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.