Home / 394,983.12-592,413.84-128,742.96

Finding the Fourth Proportional to 394,983.12, 592,413.84 and 128,742.96

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Solution

The fourth proportional to 394,983.12, 592,413.84 and 128,742.96 is: 193,094.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,983.12 : 592,413.84 = 128,742.96 : x
  2. Step 2: Convert to fraction form
    394,983.12/592,413.84 = 128,742.96/x
  3. Step 3: Cross multiply
    394,983.12x = 592,413.84 × 128,742.96
  4. Step 4: Simplify right side
    394,983.12x = 76,269,111,306.57
  5. Step 5: Solve for x
    x = 76,269,111,306.57/394,983.12
  6. Step 6: Final answer
    x = 193,094.61

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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.