Home / 861,821.48-1,292,730.80-860,574.88

Finding the Fourth Proportional to 861,821.48, 1,292,730.80 and 860,574.88

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Solution

The fourth proportional to 861,821.48, 1,292,730.80 and 860,574.88 is: 1,290,860.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,821.48 : 1,292,730.80 = 860,574.88 : x
  2. Step 2: Convert to fraction form
    861,821.48/1,292,730.80 = 860,574.88/x
  3. Step 3: Cross multiply
    861,821.48x = 1,292,730.80 × 860,574.88
  4. Step 4: Simplify right side
    861,821.48x = 1,112,491,653,082.30
  5. Step 5: Solve for x
    x = 1,112,491,653,082.30/861,821.48
  6. Step 6: Final answer
    x = 1,290,860.90

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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.