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Finding the Fourth Proportional to 478,425.66, 717,639.50 and 449,196.41

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Solution

The fourth proportional to 478,425.66, 717,639.50 and 449,196.41 is: 673,795.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,425.66 : 717,639.50 = 449,196.41 : x
  2. Step 2: Convert to fraction form
    478,425.66/717,639.50 = 449,196.41/x
  3. Step 3: Cross multiply
    478,425.66x = 717,639.50 × 449,196.41
  4. Step 4: Simplify right side
    478,425.66x = 322,361,081,240.02
  5. Step 5: Solve for x
    x = 322,361,081,240.02/478,425.66
  6. Step 6: Final answer
    x = 673,795.55

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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.