Home / 998,128.60-1,494,860.10-978,083.80

Finding the Fourth Proportional to 998,128.60, 1,494,860.10 and 978,083.80

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Solution

The fourth proportional to 998,128.60, 1,494,860.10 and 978,083.80 is: 1,464,839.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    998,128.60 : 1,494,860.10 = 978,083.80 : x
  2. Step 2: Convert to fraction form
    998,128.60/1,494,860.10 = 978,083.80/x
  3. Step 3: Cross multiply
    998,128.60x = 1,494,860.10 × 978,083.80
  4. Step 4: Simplify right side
    998,128.60x = 1,462,098,447,076.38
  5. Step 5: Solve for x
    x = 1,462,098,447,076.38/998,128.60
  6. Step 6: Final answer
    x = 1,464,839.75

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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.