Home / 681,431,618.40-1,022,147,427.60-487,939,855.20

Finding the Fourth Proportional to 681,431,618.40, 1,022,147,427.60 and 487,939,855.20

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Solution

The fourth proportional to 681,431,618.40, 1,022,147,427.60 and 487,939,855.20 is: 731,909,782.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,431,618.40 : 1,022,147,427.60 = 487,939,855.20 : x
  2. Step 2: Convert to fraction form
    681,431,618.40/1,022,147,427.60 = 487,939,855.20/x
  3. Step 3: Cross multiply
    681,431,618.40x = 1,022,147,427.60 × 487,939,855.20
  4. Step 4: Simplify right side
    681,431,618.40x = 498,746,467,816,196,480
  5. Step 5: Solve for x
    x = 498,746,467,816,196,480/681,431,618.40
  6. Step 6: Final answer
    x = 731,909,782.80

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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.