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Finding the Fourth Proportional to 667,885.20, 921,684.24 and 361,962.24

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Solution

The fourth proportional to 667,885.20, 921,684.24 and 361,962.24 is: 499,509.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,885.20 : 921,684.24 = 361,962.24 : x
  2. Step 2: Convert to fraction form
    667,885.20/921,684.24 = 361,962.24/x
  3. Step 3: Cross multiply
    667,885.20x = 921,684.24 × 361,962.24
  4. Step 4: Simplify right side
    667,885.20x = 333,614,892,083.10
  5. Step 5: Solve for x
    x = 333,614,892,083.10/667,885.20
  6. Step 6: Final answer
    x = 499,509.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.