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Finding the Fourth Proportional to 1,053,731.20, 1,575,931.20 and 885,769.60

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Solution

The fourth proportional to 1,053,731.20, 1,575,931.20 and 885,769.60 is: 1,324,732.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,053,731.20 : 1,575,931.20 = 885,769.60 : x
  2. Step 2: Convert to fraction form
    1,053,731.20/1,575,931.20 = 885,769.60/x
  3. Step 3: Cross multiply
    1,053,731.20x = 1,575,931.20 × 885,769.60
  4. Step 4: Simplify right side
    1,053,731.20x = 1,395,911,948,651.52
  5. Step 5: Solve for x
    x = 1,395,911,948,651.52/1,053,731.20
  6. Step 6: Final answer
    x = 1,324,732.48

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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.