Home / 1,087,466,308.20-1,628,512,076.70-721,981,866.60

Finding the Fourth Proportional to 1,087,466,308.20, 1,628,512,076.70 and 721,981,866.60

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Solution

The fourth proportional to 1,087,466,308.20, 1,628,512,076.70 and 721,981,866.60 is: 1,081,188,612.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,087,466,308.20 : 1,628,512,076.70 = 721,981,866.60 : x
  2. Step 2: Convert to fraction form
    1,087,466,308.20/1,628,512,076.70 = 721,981,866.60/x
  3. Step 3: Cross multiply
    1,087,466,308.20x = 1,628,512,076.70 × 721,981,866.60
  4. Step 4: Simplify right side
    1,087,466,308.20x = 1,175,756,188,916,508,416
  5. Step 5: Solve for x
    x = 1,175,756,188,916,508,416/1,087,466,308.20
  6. Step 6: Final answer
    x = 1,081,188,612.51

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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.