Home / 285,752,753.28-428,628,295.98-78,491,361.78

Finding the Fourth Proportional to 285,752,753.28, 428,628,295.98 and 78,491,361.78

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Solution

The fourth proportional to 285,752,753.28, 428,628,295.98 and 78,491,361.78 is: 117,736,813.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,752,753.28 : 428,628,295.98 = 78,491,361.78 : x
  2. Step 2: Convert to fraction form
    285,752,753.28/428,628,295.98 = 78,491,361.78/x
  3. Step 3: Cross multiply
    285,752,753.28x = 428,628,295.98 × 78,491,361.78
  4. Step 4: Simplify right side
    285,752,753.28x = 33,643,618,648,911,100
  5. Step 5: Solve for x
    x = 33,643,618,648,911,100/285,752,753.28
  6. Step 6: Final answer
    x = 117,736,813.60

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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.