Home / 8,408,561.40-12,612,842.10-7,988,657.40

Finding the Fourth Proportional to 8,408,561.40, 12,612,842.10 and 7,988,657.40

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Solution

The fourth proportional to 8,408,561.40, 12,612,842.10 and 7,988,657.40 is: 11,982,986.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,408,561.40 : 12,612,842.10 = 7,988,657.40 : x
  2. Step 2: Convert to fraction form
    8,408,561.40/12,612,842.10 = 7,988,657.40/x
  3. Step 3: Cross multiply
    8,408,561.40x = 12,612,842.10 × 7,988,657.40
  4. Step 4: Simplify right side
    8,408,561.40x = 100,759,674,377,196.55
  5. Step 5: Solve for x
    x = 100,759,674,377,196.55/8,408,561.40
  6. Step 6: Final answer
    x = 11,982,986.10

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Similar ratio
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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.