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Finding the Fourth Proportional to 478,342.55, 717,514.73 and 449,113.29

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Solution

The fourth proportional to 478,342.55, 717,514.73 and 449,113.29 is: 673,670.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,342.55 : 717,514.73 = 449,113.29 : x
  2. Step 2: Convert to fraction form
    478,342.55/717,514.73 = 449,113.29/x
  3. Step 3: Cross multiply
    478,342.55x = 717,514.73 × 449,113.29
  4. Step 4: Simplify right side
    478,342.55x = 322,245,398,768.20
  5. Step 5: Solve for x
    x = 322,245,398,768.20/478,342.55
  6. Step 6: Final answer
    x = 673,670.79

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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.