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Finding the Fourth Proportional to 478,342.19, 717,514.18 and 449,112.94

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Solution

The fourth proportional to 478,342.19, 717,514.18 and 449,112.94 is: 673,670.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,342.19 : 717,514.18 = 449,112.94 : x
  2. Step 2: Convert to fraction form
    478,342.19/717,514.18 = 449,112.94/x
  3. Step 3: Cross multiply
    478,342.19x = 717,514.18 × 449,112.94
  4. Step 4: Simplify right side
    478,342.19x = 322,244,899,954.92
  5. Step 5: Solve for x
    x = 322,244,899,954.92/478,342.19
  6. Step 6: Final answer
    x = 673,670.24

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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.