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Finding the Fourth Proportional to 667,773.89, 921,426.04 and 377,279.46

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Solution

The fourth proportional to 667,773.89, 921,426.04 and 377,279.46 is: 520,588.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,773.89 : 921,426.04 = 377,279.46 : x
  2. Step 2: Convert to fraction form
    667,773.89/921,426.04 = 377,279.46/x
  3. Step 3: Cross multiply
    667,773.89x = 921,426.04 × 377,279.46
  4. Step 4: Simplify right side
    667,773.89x = 347,635,119,744.34
  5. Step 5: Solve for x
    x = 347,635,119,744.34/667,773.89
  6. Step 6: Final answer
    x = 520,588.07

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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.