Home / 8,787,145.20-13,188,493.80-5,188,412.40

Finding the Fourth Proportional to 8,787,145.20, 13,188,493.80 and 5,188,412.40

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Solution

The fourth proportional to 8,787,145.20, 13,188,493.80 and 5,188,412.40 is: 7,787,209.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,787,145.20 : 13,188,493.80 = 5,188,412.40 : x
  2. Step 2: Convert to fraction form
    8,787,145.20/13,188,493.80 = 5,188,412.40/x
  3. Step 3: Cross multiply
    8,787,145.20x = 13,188,493.80 × 5,188,412.40
  4. Step 4: Simplify right side
    8,787,145.20x = 68,427,344,769,243.12
  5. Step 5: Solve for x
    x = 68,427,344,769,243.12/8,787,145.20
  6. Step 6: Final answer
    x = 7,787,209.98

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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.