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Finding the Fourth Proportional to 447,790.74, 671,948.56 and 321,294.66

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Solution

The fourth proportional to 447,790.74, 671,948.56 and 321,294.66 is: 482,130.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,790.74 : 671,948.56 = 321,294.66 : x
  2. Step 2: Convert to fraction form
    447,790.74/671,948.56 = 321,294.66/x
  3. Step 3: Cross multiply
    447,790.74x = 671,948.56 × 321,294.66
  4. Step 4: Simplify right side
    447,790.74x = 215,893,484,122.69
  5. Step 5: Solve for x
    x = 215,893,484,122.69/447,790.74
  6. Step 6: Final answer
    x = 482,130.30

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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.