Home / 815,907.60-1,223,861.40-810,002.70

Finding the Fourth Proportional to 815,907.60, 1,223,861.40 and 810,002.70

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Solution

The fourth proportional to 815,907.60, 1,223,861.40 and 810,002.70 is: 1,215,004.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,907.60 : 1,223,861.40 = 810,002.70 : x
  2. Step 2: Convert to fraction form
    815,907.60/1,223,861.40 = 810,002.70/x
  3. Step 3: Cross multiply
    815,907.60x = 1,223,861.40 × 810,002.70
  4. Step 4: Simplify right side
    815,907.60x = 991,331,038,425.78
  5. Step 5: Solve for x
    x = 991,331,038,425.78/815,907.60
  6. Step 6: Final answer
    x = 1,215,004.05

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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.