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Finding the Fourth Proportional to 817,672.80, 1,224,759.60 and 729,026.40

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Solution

The fourth proportional to 817,672.80, 1,224,759.60 and 729,026.40 is: 1,091,979.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,672.80 : 1,224,759.60 = 729,026.40 : x
  2. Step 2: Convert to fraction form
    817,672.80/1,224,759.60 = 729,026.40/x
  3. Step 3: Cross multiply
    817,672.80x = 1,224,759.60 × 729,026.40
  4. Step 4: Simplify right side
    817,672.80x = 892,882,082,053.44
  5. Step 5: Solve for x
    x = 892,882,082,053.44/817,672.80
  6. Step 6: Final answer
    x = 1,091,979.68

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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.