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Finding the Fourth Proportional to 667,727.76, 921,461.12 and 365,921.76

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Solution

The fourth proportional to 667,727.76, 921,461.12 and 365,921.76 is: 504,970.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,727.76 : 921,461.12 = 365,921.76 : x
  2. Step 2: Convert to fraction form
    667,727.76/921,461.12 = 365,921.76/x
  3. Step 3: Cross multiply
    667,727.76x = 921,461.12 × 365,921.76
  4. Step 4: Simplify right side
    667,727.76x = 337,182,674,801.97
  5. Step 5: Solve for x
    x = 337,182,674,801.97/667,727.76
  6. Step 6: Final answer
    x = 504,970.28

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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.