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Finding the Fourth Proportional to 647,744.12, 971,601.60 and 292,662.80

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Solution

The fourth proportional to 647,744.12, 971,601.60 and 292,662.80 is: 438,987.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,744.12 : 971,601.60 = 292,662.80 : x
  2. Step 2: Convert to fraction form
    647,744.12/971,601.60 = 292,662.80/x
  3. Step 3: Cross multiply
    647,744.12x = 971,601.60 × 292,662.80
  4. Step 4: Simplify right side
    647,744.12x = 284,351,644,740.48
  5. Step 5: Solve for x
    x = 284,351,644,740.48/647,744.12
  6. Step 6: Final answer
    x = 438,987.61

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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.