Home / 1,290,548.72-1,780,998.36-717,613.04

Finding the Fourth Proportional to 1,290,548.72, 1,780,998.36 and 717,613.04

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Solution

The fourth proportional to 1,290,548.72, 1,780,998.36 and 717,613.04 is: 990,328.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,548.72 : 1,780,998.36 = 717,613.04 : x
  2. Step 2: Convert to fraction form
    1,290,548.72/1,780,998.36 = 717,613.04/x
  3. Step 3: Cross multiply
    1,290,548.72x = 1,780,998.36 × 717,613.04
  4. Step 4: Simplify right side
    1,290,548.72x = 1,278,067,647,354.61
  5. Step 5: Solve for x
    x = 1,278,067,647,354.61/1,290,548.72
  6. Step 6: Final answer
    x = 990,328.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.