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Finding the Fourth Proportional to 667,883.04, 921,668.15 and 361,956.74

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Solution

The fourth proportional to 667,883.04, 921,668.15 and 361,956.74 is: 499,494.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,883.04 : 921,668.15 = 361,956.74 : x
  2. Step 2: Convert to fraction form
    667,883.04/921,668.15 = 361,956.74/x
  3. Step 3: Cross multiply
    667,883.04x = 921,668.15 × 361,956.74
  4. Step 4: Simplify right side
    667,883.04x = 333,603,995,232.38
  5. Step 5: Solve for x
    x = 333,603,995,232.38/667,883.04
  6. Step 6: Final answer
    x = 499,494.64

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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.