Home / 858,808.20-1,288,212.30-815,505.60

Finding the Fourth Proportional to 858,808.20, 1,288,212.30 and 815,505.60

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Solution

The fourth proportional to 858,808.20, 1,288,212.30 and 815,505.60 is: 1,223,258.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,808.20 : 1,288,212.30 = 815,505.60 : x
  2. Step 2: Convert to fraction form
    858,808.20/1,288,212.30 = 815,505.60/x
  3. Step 3: Cross multiply
    858,808.20x = 1,288,212.30 × 815,505.60
  4. Step 4: Simplify right side
    858,808.20x = 1,050,544,344,638.88
  5. Step 5: Solve for x
    x = 1,050,544,344,638.88/858,808.20
  6. Step 6: Final answer
    x = 1,223,258.40

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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.