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Finding the Fourth Proportional to 478,424.16, 717,637.25 and 449,194.91

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Solution

The fourth proportional to 478,424.16, 717,637.25 and 449,194.91 is: 673,793.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,424.16 : 717,637.25 = 449,194.91 : x
  2. Step 2: Convert to fraction form
    478,424.16/717,637.25 = 449,194.91/x
  3. Step 3: Cross multiply
    478,424.16x = 717,637.25 × 449,194.91
  4. Step 4: Simplify right side
    478,424.16x = 322,358,994,092.24
  5. Step 5: Solve for x
    x = 322,358,994,092.24/478,424.16
  6. Step 6: Final answer
    x = 673,793.30

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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.