Home / 1,275,987.26-1,912,175.40-707,618.36

Finding the Fourth Proportional to 1,275,987.26, 1,912,175.40 and 707,618.36

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Solution

The fourth proportional to 1,275,987.26, 1,912,175.40 and 707,618.36 is: 1,060,426.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,275,987.26 : 1,912,175.40 = 707,618.36 : x
  2. Step 2: Convert to fraction form
    1,275,987.26/1,912,175.40 = 707,618.36/x
  3. Step 3: Cross multiply
    1,275,987.26x = 1,912,175.40 × 707,618.36
  4. Step 4: Simplify right side
    1,275,987.26x = 1,353,090,420,580.34
  5. Step 5: Solve for x
    x = 1,353,090,420,580.34/1,275,987.26
  6. Step 6: Final answer
    x = 1,060,426.28

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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.