Home / 991,317.89-1,486,974.11-281,346.62

Finding the Fourth Proportional to 991,317.89, 1,486,974.11 and 281,346.62

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Solution

The fourth proportional to 991,317.89, 1,486,974.11 and 281,346.62 is: 422,019.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,317.89 : 1,486,974.11 = 281,346.62 : x
  2. Step 2: Convert to fraction form
    991,317.89/1,486,974.11 = 281,346.62/x
  3. Step 3: Cross multiply
    991,317.89x = 1,486,974.11 × 281,346.62
  4. Step 4: Simplify right side
    991,317.89x = 418,355,131,034.41
  5. Step 5: Solve for x
    x = 418,355,131,034.41/991,317.89
  6. Step 6: Final answer
    x = 422,019.15

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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.