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Finding the Fourth Proportional to 667,900.08, 921,076.92 and 426,338.64

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Solution

The fourth proportional to 667,900.08, 921,076.92 and 426,338.64 is: 587,948.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,900.08 : 921,076.92 = 426,338.64 : x
  2. Step 2: Convert to fraction form
    667,900.08/921,076.92 = 426,338.64/x
  3. Step 3: Cross multiply
    667,900.08x = 921,076.92 × 426,338.64
  4. Step 4: Simplify right side
    667,900.08x = 392,690,681,408.19
  5. Step 5: Solve for x
    x = 392,690,681,408.19/667,900.08
  6. Step 6: Final answer
    x = 587,948.25

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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.