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Finding the Fourth Proportional to 478,342.17, 717,514.16 and 449,112.92

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Solution

The fourth proportional to 478,342.17, 717,514.16 and 449,112.92 is: 673,670.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,342.17 : 717,514.16 = 449,112.92 : x
  2. Step 2: Convert to fraction form
    478,342.17/717,514.16 = 449,112.92/x
  3. Step 3: Cross multiply
    478,342.17x = 717,514.16 × 449,112.92
  4. Step 4: Simplify right side
    478,342.17x = 322,244,873,705.81
  5. Step 5: Solve for x
    x = 322,244,873,705.81/478,342.17
  6. Step 6: Final answer
    x = 673,670.22

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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.