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Finding the Fourth Proportional to 478,336.79, 717,506.10 and 449,107.54

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Solution

The fourth proportional to 478,336.79, 717,506.10 and 449,107.54 is: 673,662.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,336.79 : 717,506.10 = 449,107.54 : x
  2. Step 2: Convert to fraction form
    478,336.79/717,506.10 = 449,107.54/x
  3. Step 3: Cross multiply
    478,336.79x = 717,506.10 × 449,107.54
  4. Step 4: Simplify right side
    478,336.79x = 322,237,393,672.93
  5. Step 5: Solve for x
    x = 322,237,393,672.93/478,336.79
  6. Step 6: Final answer
    x = 673,662.16

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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.