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Finding the Fourth Proportional to 530,777.10, 732,532.91 and 315,917.85

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Solution

The fourth proportional to 530,777.10, 732,532.91 and 315,917.85 is: 436,002.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,777.10 : 732,532.91 = 315,917.85 : x
  2. Step 2: Convert to fraction form
    530,777.10/732,532.91 = 315,917.85/x
  3. Step 3: Cross multiply
    530,777.10x = 732,532.91 × 315,917.85
  4. Step 4: Simplify right side
    530,777.10x = 231,420,220,401.85
  5. Step 5: Solve for x
    x = 231,420,220,401.85/530,777.10
  6. Step 6: Final answer
    x = 436,002.65

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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.