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Finding the Fourth Proportional to 487,534.26, 672,762.60 and 447,380.94

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Solution

The fourth proportional to 487,534.26, 672,762.60 and 447,380.94 is: 617,353.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,534.26 : 672,762.60 = 447,380.94 : x
  2. Step 2: Convert to fraction form
    487,534.26/672,762.60 = 447,380.94/x
  3. Step 3: Cross multiply
    487,534.26x = 672,762.60 × 447,380.94
  4. Step 4: Simplify right side
    487,534.26x = 300,981,164,384.84
  5. Step 5: Solve for x
    x = 300,981,164,384.84/487,534.26
  6. Step 6: Final answer
    x = 617,353.87

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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.