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Finding the Fourth Proportional to 472,891.20, 707,288.80 and 423,329.60

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Solution

The fourth proportional to 472,891.20, 707,288.80 and 423,329.60 is: 633,161.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,891.20 : 707,288.80 = 423,329.60 : x
  2. Step 2: Convert to fraction form
    472,891.20/707,288.80 = 423,329.60/x
  3. Step 3: Cross multiply
    472,891.20x = 707,288.80 × 423,329.60
  4. Step 4: Simplify right side
    472,891.20x = 299,416,284,788.48
  5. Step 5: Solve for x
    x = 299,416,284,788.48/472,891.20
  6. Step 6: Final answer
    x = 633,161.04

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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.