Home / 681,431,570.40-1,022,147,355.60-487,939,807.20

Finding the Fourth Proportional to 681,431,570.40, 1,022,147,355.60 and 487,939,807.20

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Solution

The fourth proportional to 681,431,570.40, 1,022,147,355.60 and 487,939,807.20 is: 731,909,710.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,431,570.40 : 1,022,147,355.60 = 487,939,807.20 : x
  2. Step 2: Convert to fraction form
    681,431,570.40/1,022,147,355.60 = 487,939,807.20/x
  3. Step 3: Cross multiply
    681,431,570.40x = 1,022,147,355.60 × 487,939,807.20
  4. Step 4: Simplify right side
    681,431,570.40x = 498,746,383,621,453,824
  5. Step 5: Solve for x
    x = 498,746,383,621,453,824/681,431,570.40
  6. Step 6: Final answer
    x = 731,909,710.80

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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.