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Finding the Fourth Proportional to 408,289.74, 612,395.01 and 123,982.76

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Solution

The fourth proportional to 408,289.74, 612,395.01 and 123,982.76 is: 185,962.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,289.74 : 612,395.01 = 123,982.76 : x
  2. Step 2: Convert to fraction form
    408,289.74/612,395.01 = 123,982.76/x
  3. Step 3: Cross multiply
    408,289.74x = 612,395.01 × 123,982.76
  4. Step 4: Simplify right side
    408,289.74x = 75,926,423,550.03
  5. Step 5: Solve for x
    x = 75,926,423,550.03/408,289.74
  6. Step 6: Final answer
    x = 185,962.11

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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.