Home / 987,138.20-1,480,707.30-668,273.60

Finding the Fourth Proportional to 987,138.20, 1,480,707.30 and 668,273.60

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Solution

The fourth proportional to 987,138.20, 1,480,707.30 and 668,273.60 is: 1,002,410.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,138.20 : 1,480,707.30 = 668,273.60 : x
  2. Step 2: Convert to fraction form
    987,138.20/1,480,707.30 = 668,273.60/x
  3. Step 3: Cross multiply
    987,138.20x = 1,480,707.30 × 668,273.60
  4. Step 4: Simplify right side
    987,138.20x = 989,517,597,917.28
  5. Step 5: Solve for x
    x = 989,517,597,917.28/987,138.20
  6. Step 6: Final answer
    x = 1,002,410.40

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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.