Home / 992,499,100.40-1,489,067,515.20-665,344,020.80

Finding the Fourth Proportional to 992,499,100.40, 1,489,067,515.20 and 665,344,020.80

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Solution

The fourth proportional to 992,499,100.40, 1,489,067,515.20 and 665,344,020.80 is: 998,229,789.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    992,499,100.40 : 1,489,067,515.20 = 665,344,020.80 : x
  2. Step 2: Convert to fraction form
    992,499,100.40/1,489,067,515.20 = 665,344,020.80/x
  3. Step 3: Cross multiply
    992,499,100.40x = 1,489,067,515.20 × 665,344,020.80
  4. Step 4: Simplify right side
    992,499,100.40x = 990,742,167,805,833,088
  5. Step 5: Solve for x
    x = 990,742,167,805,833,088/992,499,100.40
  6. Step 6: Final answer
    x = 998,229,789.23

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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.