Home / 12,872,809.20-19,309,213.80-3,897,807.60

Finding the Fourth Proportional to 12,872,809.20, 19,309,213.80 and 3,897,807.60

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Solution

The fourth proportional to 12,872,809.20, 19,309,213.80 and 3,897,807.60 is: 5,846,711.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,872,809.20 : 19,309,213.80 = 3,897,807.60 : x
  2. Step 2: Convert to fraction form
    12,872,809.20/19,309,213.80 = 3,897,807.60/x
  3. Step 3: Cross multiply
    12,872,809.20x = 19,309,213.80 × 3,897,807.60
  4. Step 4: Simplify right side
    12,872,809.20x = 75,263,600,299,664.89
  5. Step 5: Solve for x
    x = 75,263,600,299,664.89/12,872,809.20
  6. Step 6: Final answer
    x = 5,846,711.40

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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.