Home / 1,120,868.80-1,679,456.40-646,727.20

Finding the Fourth Proportional to 1,120,868.80, 1,679,456.40 and 646,727.20

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Solution

The fourth proportional to 1,120,868.80, 1,679,456.40 and 646,727.20 is: 969,025.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,120,868.80 : 1,679,456.40 = 646,727.20 : x
  2. Step 2: Convert to fraction form
    1,120,868.80/1,679,456.40 = 646,727.20/x
  3. Step 3: Cross multiply
    1,120,868.80x = 1,679,456.40 × 646,727.20
  4. Step 4: Simplify right side
    1,120,868.80x = 1,086,150,135,094.08
  5. Step 5: Solve for x
    x = 1,086,150,135,094.08/1,120,868.80
  6. Step 6: Final answer
    x = 969,025.22

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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.