Home / 8,102,419.20-12,153,628.80-5,079,110.40

Finding the Fourth Proportional to 8,102,419.20, 12,153,628.80 and 5,079,110.40

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Solution

The fourth proportional to 8,102,419.20, 12,153,628.80 and 5,079,110.40 is: 7,618,665.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,102,419.20 : 12,153,628.80 = 5,079,110.40 : x
  2. Step 2: Convert to fraction form
    8,102,419.20/12,153,628.80 = 5,079,110.40/x
  3. Step 3: Cross multiply
    8,102,419.20x = 12,153,628.80 × 5,079,110.40
  4. Step 4: Simplify right side
    8,102,419.20x = 61,729,622,435,819.53
  5. Step 5: Solve for x
    x = 61,729,622,435,819.53/8,102,419.20
  6. Step 6: Final answer
    x = 7,618,665.60

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Similar ratio
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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.