Home / 12,378,731.80-18,568,097.70-3,859,000.60

Finding the Fourth Proportional to 12,378,731.80, 18,568,097.70 and 3,859,000.60

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Solution

The fourth proportional to 12,378,731.80, 18,568,097.70 and 3,859,000.60 is: 5,788,500.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,378,731.80 : 18,568,097.70 = 3,859,000.60 : x
  2. Step 2: Convert to fraction form
    12,378,731.80/18,568,097.70 = 3,859,000.60/x
  3. Step 3: Cross multiply
    12,378,731.80x = 18,568,097.70 × 3,859,000.60
  4. Step 4: Simplify right side
    12,378,731.80x = 71,654,300,165,158.62
  5. Step 5: Solve for x
    x = 71,654,300,165,158.62/12,378,731.80
  6. Step 6: Final answer
    x = 5,788,500.90

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1.5x scale

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.