Home / 486,317.12-671,229.60-285,177.92

Finding the Fourth Proportional to 486,317.12, 671,229.60 and 285,177.92

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Solution

The fourth proportional to 486,317.12, 671,229.60 and 285,177.92 is: 393,611.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,317.12 : 671,229.60 = 285,177.92 : x
  2. Step 2: Convert to fraction form
    486,317.12/671,229.60 = 285,177.92/x
  3. Step 3: Cross multiply
    486,317.12x = 671,229.60 × 285,177.92
  4. Step 4: Simplify right side
    486,317.12x = 191,419,861,170.43
  5. Step 5: Solve for x
    x = 191,419,861,170.43/486,317.12
  6. Step 6: Final answer
    x = 393,611.19

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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.