Home / 681,874,442.40-1,021,635,932.40-317,621,719.20

Finding the Fourth Proportional to 681,874,442.40, 1,021,635,932.40 and 317,621,719.20

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Solution

The fourth proportional to 681,874,442.40, 1,021,635,932.40 and 317,621,719.20 is: 475,884,915.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,874,442.40 : 1,021,635,932.40 = 317,621,719.20 : x
  2. Step 2: Convert to fraction form
    681,874,442.40/1,021,635,932.40 = 317,621,719.20/x
  3. Step 3: Cross multiply
    681,874,442.40x = 1,021,635,932.40 × 317,621,719.20
  4. Step 4: Simplify right side
    681,874,442.40x = 324,493,761,245,382,976
  5. Step 5: Solve for x
    x = 324,493,761,245,382,976/681,874,442.40
  6. Step 6: Final answer
    x = 475,884,915.27

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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.