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Finding the Fourth Proportional to 463,351.46, 639,501.48 and 318,037.82

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Solution

The fourth proportional to 463,351.46, 639,501.48 and 318,037.82 is: 438,944.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    463,351.46 : 639,501.48 = 318,037.82 : x
  2. Step 2: Convert to fraction form
    463,351.46/639,501.48 = 318,037.82/x
  3. Step 3: Cross multiply
    463,351.46x = 639,501.48 × 318,037.82
  4. Step 4: Simplify right side
    463,351.46x = 203,385,656,585.97
  5. Step 5: Solve for x
    x = 203,385,656,585.97/463,351.46
  6. Step 6: Final answer
    x = 438,944.68

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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.