Home / 815,734.40-1,223,601.60-343,342.40

Finding the Fourth Proportional to 815,734.40, 1,223,601.60 and 343,342.40

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Solution

The fourth proportional to 815,734.40, 1,223,601.60 and 343,342.40 is: 515,013.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,734.40 : 1,223,601.60 = 343,342.40 : x
  2. Step 2: Convert to fraction form
    815,734.40/1,223,601.60 = 343,342.40/x
  3. Step 3: Cross multiply
    815,734.40x = 1,223,601.60 × 343,342.40
  4. Step 4: Simplify right side
    815,734.40x = 420,114,309,987.84
  5. Step 5: Solve for x
    x = 420,114,309,987.84/815,734.40
  6. Step 6: Final answer
    x = 515,013.60

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Double scale
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Similar ratio
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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.