Home / 8,305,906.40-12,458,859.60-5,100,639.20

Finding the Fourth Proportional to 8,305,906.40, 12,458,859.60 and 5,100,639.20

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Solution

The fourth proportional to 8,305,906.40, 12,458,859.60 and 5,100,639.20 is: 7,650,958.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,305,906.40 : 12,458,859.60 = 5,100,639.20 : x
  2. Step 2: Convert to fraction form
    8,305,906.40/12,458,859.60 = 5,100,639.20/x
  3. Step 3: Cross multiply
    8,305,906.40x = 12,458,859.60 × 5,100,639.20
  4. Step 4: Simplify right side
    8,305,906.40x = 63,548,147,663,056.32
  5. Step 5: Solve for x
    x = 63,548,147,663,056.32/8,305,906.40
  6. Step 6: Final answer
    x = 7,650,958.80

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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.