Home / 992,780,998.80-1,489,171,498.20-338,470,839.60

Finding the Fourth Proportional to 992,780,998.80, 1,489,171,498.20 and 338,470,839.60

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Solution

The fourth proportional to 992,780,998.80, 1,489,171,498.20 and 338,470,839.60 is: 507,706,259.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    992,780,998.80 : 1,489,171,498.20 = 338,470,839.60 : x
  2. Step 2: Convert to fraction form
    992,780,998.80/1,489,171,498.20 = 338,470,839.60/x
  3. Step 3: Cross multiply
    992,780,998.80x = 1,489,171,498.20 × 338,470,839.60
  4. Step 4: Simplify right side
    992,780,998.80x = 504,041,127,304,143,936
  5. Step 5: Solve for x
    x = 504,041,127,304,143,936/992,780,998.80
  6. Step 6: Final answer
    x = 507,706,259.40

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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.