Home / 1,442,726.79-1,990,789.88-831,079.59

Finding the Fourth Proportional to 1,442,726.79, 1,990,789.88 and 831,079.59

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Solution

The fourth proportional to 1,442,726.79, 1,990,789.88 and 831,079.59 is: 1,146,790.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,442,726.79 : 1,990,789.88 = 831,079.59 : x
  2. Step 2: Convert to fraction form
    1,442,726.79/1,990,789.88 = 831,079.59/x
  3. Step 3: Cross multiply
    1,442,726.79x = 1,990,789.88 × 831,079.59
  4. Step 4: Simplify right side
    1,442,726.79x = 1,654,504,827,292.60
  5. Step 5: Solve for x
    x = 1,654,504,827,292.60/1,442,726.79
  6. Step 6: Final answer
    x = 1,146,790.12

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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.