Home / 394,987.73-592,543.04-128,686.28

Finding the Fourth Proportional to 394,987.73, 592,543.04 and 128,686.28

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Solution

The fourth proportional to 394,987.73, 592,543.04 and 128,686.28 is: 193,049.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,987.73 : 592,543.04 = 128,686.28 : x
  2. Step 2: Convert to fraction form
    394,987.73/592,543.04 = 128,686.28/x
  3. Step 3: Cross multiply
    394,987.73x = 592,543.04 × 128,686.28
  4. Step 4: Simplify right side
    394,987.73x = 76,252,155,951.34
  5. Step 5: Solve for x
    x = 76,252,155,951.34/394,987.73
  6. Step 6: Final answer
    x = 193,049.43

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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.