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Finding the Fourth Proportional to 447,712.90, 671,569.35 and 443,047.30

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Solution

The fourth proportional to 447,712.90, 671,569.35 and 443,047.30 is: 664,570.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,712.90 : 671,569.35 = 443,047.30 : x
  2. Step 2: Convert to fraction form
    447,712.90/671,569.35 = 443,047.30/x
  3. Step 3: Cross multiply
    447,712.90x = 671,569.35 × 443,047.30
  4. Step 4: Simplify right side
    447,712.90x = 297,536,987,280.26
  5. Step 5: Solve for x
    x = 297,536,987,280.26/447,712.90
  6. Step 6: Final answer
    x = 664,570.95

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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.