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Finding the Fourth Proportional to 463,438.92, 639,215.91 and 425,321.58

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Solution

The fourth proportional to 463,438.92, 639,215.91 and 425,321.58 is: 586,641.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    463,438.92 : 639,215.91 = 425,321.58 : x
  2. Step 2: Convert to fraction form
    463,438.92/639,215.91 = 425,321.58/x
  3. Step 3: Cross multiply
    463,438.92x = 639,215.91 × 425,321.58
  4. Step 4: Simplify right side
    463,438.92x = 271,872,320,802.34
  5. Step 5: Solve for x
    x = 271,872,320,802.34/463,438.92
  6. Step 6: Final answer
    x = 586,641.11

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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.