Home / 394,987.77-592,543.08-128,686.23

Finding the Fourth Proportional to 394,987.77, 592,543.08 and 128,686.23

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Solution

The fourth proportional to 394,987.77, 592,543.08 and 128,686.23 is: 193,049.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,987.77 : 592,543.08 = 128,686.23 : x
  2. Step 2: Convert to fraction form
    394,987.77/592,543.08 = 128,686.23/x
  3. Step 3: Cross multiply
    394,987.77x = 592,543.08 × 128,686.23
  4. Step 4: Simplify right side
    394,987.77x = 76,252,135,077.79
  5. Step 5: Solve for x
    x = 76,252,135,077.79/394,987.77
  6. Step 6: Final answer
    x = 193,049.36

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1.5x scale

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.