Home / 815,501.60-1,223,446.80-394,431.20

Finding the Fourth Proportional to 815,501.60, 1,223,446.80 and 394,431.20

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Solution

The fourth proportional to 815,501.60, 1,223,446.80 and 394,431.20 is: 591,740.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,501.60 : 1,223,446.80 = 394,431.20 : x
  2. Step 2: Convert to fraction form
    815,501.60/1,223,446.80 = 394,431.20/x
  3. Step 3: Cross multiply
    815,501.60x = 1,223,446.80 × 394,431.20
  4. Step 4: Simplify right side
    815,501.60x = 482,565,589,460.16
  5. Step 5: Solve for x
    x = 482,565,589,460.16/815,501.60
  6. Step 6: Final answer
    x = 591,740.82

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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.