Home / 815,518.60-1,223,472.30-394,448.20

Finding the Fourth Proportional to 815,518.60, 1,223,472.30 and 394,448.20

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Solution

The fourth proportional to 815,518.60, 1,223,472.30 and 394,448.20 is: 591,766.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,518.60 : 1,223,472.30 = 394,448.20 : x
  2. Step 2: Convert to fraction form
    815,518.60/1,223,472.30 = 394,448.20/x
  3. Step 3: Cross multiply
    815,518.60x = 1,223,472.30 × 394,448.20
  4. Step 4: Simplify right side
    815,518.60x = 482,596,446,484.86
  5. Step 5: Solve for x
    x = 482,596,446,484.86/815,518.60
  6. Step 6: Final answer
    x = 591,766.33

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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.