Home / 1,079,689.80-1,619,534.70-911,728.20

Finding the Fourth Proportional to 1,079,689.80, 1,619,534.70 and 911,728.20

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Solution

The fourth proportional to 1,079,689.80, 1,619,534.70 and 911,728.20 is: 1,367,592.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,079,689.80 : 1,619,534.70 = 911,728.20 : x
  2. Step 2: Convert to fraction form
    1,079,689.80/1,619,534.70 = 911,728.20/x
  3. Step 3: Cross multiply
    1,079,689.80x = 1,619,534.70 × 911,728.20
  4. Step 4: Simplify right side
    1,079,689.80x = 1,476,575,456,868.54
  5. Step 5: Solve for x
    x = 1,476,575,456,868.54/1,079,689.80
  6. Step 6: Final answer
    x = 1,367,592.30

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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.