Home / 386,835.40-580,253.10-120,593.80

Finding the Fourth Proportional to 386,835.40, 580,253.10 and 120,593.80

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Solution

The fourth proportional to 386,835.40, 580,253.10 and 120,593.80 is: 180,890.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,835.40 : 580,253.10 = 120,593.80 : x
  2. Step 2: Convert to fraction form
    386,835.40/580,253.10 = 120,593.80/x
  3. Step 3: Cross multiply
    386,835.40x = 580,253.10 × 120,593.80
  4. Step 4: Simplify right side
    386,835.40x = 69,974,926,290.78
  5. Step 5: Solve for x
    x = 69,974,926,290.78/386,835.40
  6. Step 6: Final answer
    x = 180,890.70

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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.