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Finding the Fourth Proportional to 667,274.94, 920,839.89 and 361,353.72

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Solution

The fourth proportional to 667,274.94, 920,839.89 and 361,353.72 is: 498,668.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,274.94 : 920,839.89 = 361,353.72 : x
  2. Step 2: Convert to fraction form
    667,274.94/920,839.89 = 361,353.72/x
  3. Step 3: Cross multiply
    667,274.94x = 920,839.89 × 361,353.72
  4. Step 4: Simplify right side
    667,274.94x = 332,748,919,775.89
  5. Step 5: Solve for x
    x = 332,748,919,775.89/667,274.94
  6. Step 6: Final answer
    x = 498,668.39

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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.