Home / 1,215,229.80-1,822,844.70-860,644.20

Finding the Fourth Proportional to 1,215,229.80, 1,822,844.70 and 860,644.20

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Solution

The fourth proportional to 1,215,229.80, 1,822,844.70 and 860,644.20 is: 1,290,966.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215,229.80 : 1,822,844.70 = 860,644.20 : x
  2. Step 2: Convert to fraction form
    1,215,229.80/1,822,844.70 = 860,644.20/x
  3. Step 3: Cross multiply
    1,215,229.80x = 1,822,844.70 × 860,644.20
  4. Step 4: Simplify right side
    1,215,229.80x = 1,568,820,718,555.74
  5. Step 5: Solve for x
    x = 1,568,820,718,555.74/1,215,229.80
  6. Step 6: Final answer
    x = 1,290,966.30

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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.