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Finding the Fourth Proportional to 451,342, 672,977.87 and 438,941.71

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Solution

The fourth proportional to 451,342, 672,977.87 and 438,941.71 is: 654,488.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,342 : 672,977.87 = 438,941.71 : x
  2. Step 2: Convert to fraction form
    451,342/672,977.87 = 438,941.71/x
  3. Step 3: Cross multiply
    451,342x = 672,977.87 × 438,941.71
  4. Step 4: Simplify right side
    451,342x = 295,398,057,049.96
  5. Step 5: Solve for x
    x = 295,398,057,049.96/451,342
  6. Step 6: Final answer
    x = 654,488.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.