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Finding the Fourth Proportional to 478,429.64, 717,645.45 and 449,200.34

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Solution

The fourth proportional to 478,429.64, 717,645.45 and 449,200.34 is: 673,801.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,429.64 : 717,645.45 = 449,200.34 : x
  2. Step 2: Convert to fraction form
    478,429.64/717,645.45 = 449,200.34/x
  3. Step 3: Cross multiply
    478,429.64x = 717,645.45 × 449,200.34
  4. Step 4: Simplify right side
    478,429.64x = 322,366,576,551.23
  5. Step 5: Solve for x
    x = 322,366,576,551.23/478,429.64
  6. Step 6: Final answer
    x = 673,801.44

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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.