Home / 858,815,999.40-1,288,223,999.10-800,995,218.60

Finding the Fourth Proportional to 858,815,999.40, 1,288,223,999.10 and 800,995,218.60

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Solution

The fourth proportional to 858,815,999.40, 1,288,223,999.10 and 800,995,218.60 is: 1,201,492,827.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,815,999.40 : 1,288,223,999.10 = 800,995,218.60 : x
  2. Step 2: Convert to fraction form
    858,815,999.40/1,288,223,999.10 = 800,995,218.60/x
  3. Step 3: Cross multiply
    858,815,999.40x = 1,288,223,999.10 × 800,995,218.60
  4. Step 4: Simplify right side
    858,815,999.40x = 1,031,861,263,764,870,656
  5. Step 5: Solve for x
    x = 1,031,861,263,764,870,656/858,815,999.40
  6. Step 6: Final answer
    x = 1,201,492,827.90

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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.