Home / 853,979,600.40-1,280,969,400.60-787,466,806.80

Finding the Fourth Proportional to 853,979,600.40, 1,280,969,400.60 and 787,466,806.80

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Solution

The fourth proportional to 853,979,600.40, 1,280,969,400.60 and 787,466,806.80 is: 1,181,200,210.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,979,600.40 : 1,280,969,400.60 = 787,466,806.80 : x
  2. Step 2: Convert to fraction form
    853,979,600.40/1,280,969,400.60 = 787,466,806.80/x
  3. Step 3: Cross multiply
    853,979,600.40x = 1,280,969,400.60 × 787,466,806.80
  4. Step 4: Simplify right side
    853,979,600.40x = 1,008,720,883,498,991,872
  5. Step 5: Solve for x
    x = 1,008,720,883,498,991,872/853,979,600.40
  6. Step 6: Final answer
    x = 1,181,200,210.20

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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.