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Finding the Fourth Proportional to 664,036.32, 996,052.32 and 397,876.80

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Solution

The fourth proportional to 664,036.32, 996,052.32 and 397,876.80 is: 596,813.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,036.32 : 996,052.32 = 397,876.80 : x
  2. Step 2: Convert to fraction form
    664,036.32/996,052.32 = 397,876.80/x
  3. Step 3: Cross multiply
    664,036.32x = 996,052.32 × 397,876.80
  4. Step 4: Simplify right side
    664,036.32x = 396,306,109,714.18
  5. Step 5: Solve for x
    x = 396,306,109,714.18/664,036.32
  6. Step 6: Final answer
    x = 596,813.91

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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.