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Finding the Fourth Proportional to 458,591.90, 687,887.85 and 353,615.90

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Solution

The fourth proportional to 458,591.90, 687,887.85 and 353,615.90 is: 530,423.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,591.90 : 687,887.85 = 353,615.90 : x
  2. Step 2: Convert to fraction form
    458,591.90/687,887.85 = 353,615.90/x
  3. Step 3: Cross multiply
    458,591.90x = 687,887.85 × 353,615.90
  4. Step 4: Simplify right side
    458,591.90x = 243,248,081,176.82
  5. Step 5: Solve for x
    x = 243,248,081,176.82/458,591.90
  6. Step 6: Final answer
    x = 530,423.85

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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.