Home / 285,752,739.74-428,628,275.78-78,491,348.28

Finding the Fourth Proportional to 285,752,739.74, 428,628,275.78 and 78,491,348.28

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Solution

The fourth proportional to 285,752,739.74, 428,628,275.78 and 78,491,348.28 is: 117,736,793.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,752,739.74 : 428,628,275.78 = 78,491,348.28 : x
  2. Step 2: Convert to fraction form
    285,752,739.74/428,628,275.78 = 78,491,348.28/x
  3. Step 3: Cross multiply
    285,752,739.74x = 428,628,275.78 × 78,491,348.28
  4. Step 4: Simplify right side
    285,752,739.74x = 33,643,611,276,511,412
  5. Step 5: Solve for x
    x = 33,643,611,276,511,412/285,752,739.74
  6. Step 6: Final answer
    x = 117,736,793.38

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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.