Home / 815,355.54-1,223,130.57-394,328.88

Finding the Fourth Proportional to 815,355.54, 1,223,130.57 and 394,328.88

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Solution

The fourth proportional to 815,355.54, 1,223,130.57 and 394,328.88 is: 591,540.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,355.54 : 1,223,130.57 = 394,328.88 : x
  2. Step 2: Convert to fraction form
    815,355.54/1,223,130.57 = 394,328.88/x
  3. Step 3: Cross multiply
    815,355.54x = 1,223,130.57 × 394,328.88
  4. Step 4: Simplify right side
    815,355.54x = 482,315,701,646.21
  5. Step 5: Solve for x
    x = 482,315,701,646.21/815,355.54
  6. Step 6: Final answer
    x = 591,540.35

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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.