Home / 8,321,205.40-12,481,808.10-5,115,938.20

Finding the Fourth Proportional to 8,321,205.40, 12,481,808.10 and 5,115,938.20

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Solution

The fourth proportional to 8,321,205.40, 12,481,808.10 and 5,115,938.20 is: 7,673,907.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,321,205.40 : 12,481,808.10 = 5,115,938.20 : x
  2. Step 2: Convert to fraction form
    8,321,205.40/12,481,808.10 = 5,115,938.20/x
  3. Step 3: Cross multiply
    8,321,205.40x = 12,481,808.10 × 5,115,938.20
  4. Step 4: Simplify right side
    8,321,205.40x = 63,856,158,863,859.42
  5. Step 5: Solve for x
    x = 63,856,158,863,859.42/8,321,205.40
  6. Step 6: Final answer
    x = 7,673,907.30

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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.