Home / 12,128,586.40-18,193,171.20-3,609,200.80

Finding the Fourth Proportional to 12,128,586.40, 18,193,171.20 and 3,609,200.80

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Solution

The fourth proportional to 12,128,586.40, 18,193,171.20 and 3,609,200.80 is: 5,413,887.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,128,586.40 : 18,193,171.20 = 3,609,200.80 : x
  2. Step 2: Convert to fraction form
    12,128,586.40/18,193,171.20 = 3,609,200.80/x
  3. Step 3: Cross multiply
    12,128,586.40x = 18,193,171.20 × 3,609,200.80
  4. Step 4: Simplify right side
    12,128,586.40x = 65,662,808,049,576.95
  5. Step 5: Solve for x
    x = 65,662,808,049,576.95/12,128,586.40
  6. Step 6: Final answer
    x = 5,413,887.97

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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.