Home / 815,475.20-1,223,212.80-442,227.20

Finding the Fourth Proportional to 815,475.20, 1,223,212.80 and 442,227.20

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Solution

The fourth proportional to 815,475.20, 1,223,212.80 and 442,227.20 is: 663,340.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,475.20 : 1,223,212.80 = 442,227.20 : x
  2. Step 2: Convert to fraction form
    815,475.20/1,223,212.80 = 442,227.20/x
  3. Step 3: Cross multiply
    815,475.20x = 1,223,212.80 × 442,227.20
  4. Step 4: Simplify right side
    815,475.20x = 540,937,971,548.16
  5. Step 5: Solve for x
    x = 540,937,971,548.16/815,475.20
  6. Step 6: Final answer
    x = 663,340.80

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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.