Home / 853,979,603.40-1,280,969,405.10-787,466,809.80

Finding the Fourth Proportional to 853,979,603.40, 1,280,969,405.10 and 787,466,809.80

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Solution

The fourth proportional to 853,979,603.40, 1,280,969,405.10 and 787,466,809.80 is: 1,181,200,214.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,979,603.40 : 1,280,969,405.10 = 787,466,809.80 : x
  2. Step 2: Convert to fraction form
    853,979,603.40/1,280,969,405.10 = 787,466,809.80/x
  3. Step 3: Cross multiply
    853,979,603.40x = 1,280,969,405.10 × 787,466,809.80
  4. Step 4: Simplify right side
    853,979,603.40x = 1,008,720,890,885,500,672
  5. Step 5: Solve for x
    x = 1,008,720,890,885,500,672/853,979,603.40
  6. Step 6: Final answer
    x = 1,181,200,214.70

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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.