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Finding the Fourth Proportional to 667,324.20, 920,924.24 and 409,343.40

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Solution

The fourth proportional to 667,324.20, 920,924.24 and 409,343.40 is: 564,904.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,324.20 : 920,924.24 = 409,343.40 : x
  2. Step 2: Convert to fraction form
    667,324.20/920,924.24 = 409,343.40/x
  3. Step 3: Cross multiply
    667,324.20x = 920,924.24 × 409,343.40
  4. Step 4: Simplify right side
    667,324.20x = 376,974,257,497.30
  5. Step 5: Solve for x
    x = 376,974,257,497.30/667,324.20
  6. Step 6: Final answer
    x = 564,904.22

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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.