Home / 815,664.40-1,223,496.60-343,272.40

Finding the Fourth Proportional to 815,664.40, 1,223,496.60 and 343,272.40

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Solution

The fourth proportional to 815,664.40, 1,223,496.60 and 343,272.40 is: 514,908.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,664.40 : 1,223,496.60 = 343,272.40 : x
  2. Step 2: Convert to fraction form
    815,664.40/1,223,496.60 = 343,272.40/x
  3. Step 3: Cross multiply
    815,664.40x = 1,223,496.60 × 343,272.40
  4. Step 4: Simplify right side
    815,664.40x = 419,992,614,273.84
  5. Step 5: Solve for x
    x = 419,992,614,273.84/815,664.40
  6. Step 6: Final answer
    x = 514,908.60

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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.