Home / 1,981,724,959.20-2,970,623,940.60-930,581,512.80

Finding the Fourth Proportional to 1,981,724,959.20, 2,970,623,940.60 and 930,581,512.80

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Solution

The fourth proportional to 1,981,724,959.20, 2,970,623,940.60 and 930,581,512.80 is: 1,394,950,246.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,981,724,959.20 : 2,970,623,940.60 = 930,581,512.80 : x
  2. Step 2: Convert to fraction form
    1,981,724,959.20/2,970,623,940.60 = 930,581,512.80/x
  3. Step 3: Cross multiply
    1,981,724,959.20x = 2,970,623,940.60 × 930,581,512.80
  4. Step 4: Simplify right side
    1,981,724,959.20x = 2,764,407,720,603,445,248
  5. Step 5: Solve for x
    x = 2,764,407,720,603,445,248/1,981,724,959.20
  6. Step 6: Final answer
    x = 1,394,950,246.64

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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.