Home / 1,442,727.29-1,990,790.57-831,080.09

Finding the Fourth Proportional to 1,442,727.29, 1,990,790.57 and 831,080.09

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Solution

The fourth proportional to 1,442,727.29, 1,990,790.57 and 831,080.09 is: 1,146,790.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,442,727.29 : 1,990,790.57 = 831,080.09 : x
  2. Step 2: Convert to fraction form
    1,442,727.29/1,990,790.57 = 831,080.09/x
  3. Step 3: Cross multiply
    1,442,727.29x = 1,990,790.57 × 831,080.09
  4. Step 4: Simplify right side
    1,442,727.29x = 1,654,506,396,132.80
  5. Step 5: Solve for x
    x = 1,654,506,396,132.80/1,442,727.29
  6. Step 6: Final answer
    x = 1,146,790.81

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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.