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Finding the Fourth Proportional to 461,593, 636,921.39 and 308,385.55

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Solution

The fourth proportional to 461,593, 636,921.39 and 308,385.55 is: 425,520.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    461,593 : 636,921.39 = 308,385.55 : x
  2. Step 2: Convert to fraction form
    461,593/636,921.39 = 308,385.55/x
  3. Step 3: Cross multiply
    461,593x = 636,921.39 × 308,385.55
  4. Step 4: Simplify right side
    461,593x = 196,417,353,161.92
  5. Step 5: Solve for x
    x = 196,417,353,161.92/461,593
  6. Step 6: Final answer
    x = 425,520.65

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1.5x scale

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.