Home / 6,439,891.20-9,659,836.80-4,172,409.60

Finding the Fourth Proportional to 6,439,891.20, 9,659,836.80 and 4,172,409.60

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Solution

The fourth proportional to 6,439,891.20, 9,659,836.80 and 4,172,409.60 is: 6,258,614.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,439,891.20 : 9,659,836.80 = 4,172,409.60 : x
  2. Step 2: Convert to fraction form
    6,439,891.20/9,659,836.80 = 4,172,409.60/x
  3. Step 3: Cross multiply
    6,439,891.20x = 9,659,836.80 × 4,172,409.60
  4. Step 4: Simplify right side
    6,439,891.20x = 40,304,795,798,753.28
  5. Step 5: Solve for x
    x = 40,304,795,798,753.28/6,439,891.20
  6. Step 6: Final answer
    x = 6,258,614.40

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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.