Home / 815,415.60-1,222,540.20-365,768.40

Finding the Fourth Proportional to 815,415.60, 1,222,540.20 and 365,768.40

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Solution

The fourth proportional to 815,415.60, 1,222,540.20 and 365,768.40 is: 548,391.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,415.60 : 1,222,540.20 = 365,768.40 : x
  2. Step 2: Convert to fraction form
    815,415.60/1,222,540.20 = 365,768.40/x
  3. Step 3: Cross multiply
    815,415.60x = 1,222,540.20 × 365,768.40
  4. Step 4: Simplify right side
    815,415.60x = 447,166,572,889.68
  5. Step 5: Solve for x
    x = 447,166,572,889.68/815,415.60
  6. Step 6: Final answer
    x = 548,391.00

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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.