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Finding the Fourth Proportional to 667,614.64, 921,308.76 and 365,808.64

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Solution

The fourth proportional to 667,614.64, 921,308.76 and 365,808.64 is: 504,816.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,614.64 : 921,308.76 = 365,808.64 : x
  2. Step 2: Convert to fraction form
    667,614.64/921,308.76 = 365,808.64/x
  3. Step 3: Cross multiply
    667,614.64x = 921,308.76 × 365,808.64
  4. Step 4: Simplify right side
    667,614.64x = 337,022,704,515.69
  5. Step 5: Solve for x
    x = 337,022,704,515.69/667,614.64
  6. Step 6: Final answer
    x = 504,816.23

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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.