Home / 7,971,839.40-11,957,759.10-5,578,386.60

Finding the Fourth Proportional to 7,971,839.40, 11,957,759.10 and 5,578,386.60

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Solution

The fourth proportional to 7,971,839.40, 11,957,759.10 and 5,578,386.60 is: 8,367,579.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,971,839.40 : 11,957,759.10 = 5,578,386.60 : x
  2. Step 2: Convert to fraction form
    7,971,839.40/11,957,759.10 = 5,578,386.60/x
  3. Step 3: Cross multiply
    7,971,839.40x = 11,957,759.10 × 5,578,386.60
  4. Step 4: Simplify right side
    7,971,839.40x = 66,705,003,129,468.05
  5. Step 5: Solve for x
    x = 66,705,003,129,468.05/7,971,839.40
  6. Step 6: Final answer
    x = 8,367,579.90

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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.