Home / 420,318,439.32-629,930,717.55-171,033,121.29

Finding the Fourth Proportional to 420,318,439.32, 629,930,717.55 and 171,033,121.29

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Solution

The fourth proportional to 420,318,439.32, 629,930,717.55 and 171,033,121.29 is: 256,327,124.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,318,439.32 : 629,930,717.55 = 171,033,121.29 : x
  2. Step 2: Convert to fraction form
    420,318,439.32/629,930,717.55 = 171,033,121.29/x
  3. Step 3: Cross multiply
    420,318,439.32x = 629,930,717.55 × 171,033,121.29
  4. Step 4: Simplify right side
    420,318,439.32x = 107,739,016,819,025,872
  5. Step 5: Solve for x
    x = 107,739,016,819,025,872/420,318,439.32
  6. Step 6: Final answer
    x = 256,327,124.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.