Home / 828,987.20-1,243,480.80-629,921.60

Finding the Fourth Proportional to 828,987.20, 1,243,480.80 and 629,921.60

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Solution

The fourth proportional to 828,987.20, 1,243,480.80 and 629,921.60 is: 944,882.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,987.20 : 1,243,480.80 = 629,921.60 : x
  2. Step 2: Convert to fraction form
    828,987.20/1,243,480.80 = 629,921.60/x
  3. Step 3: Cross multiply
    828,987.20x = 1,243,480.80 × 629,921.60
  4. Step 4: Simplify right side
    828,987.20x = 783,295,415,105.28
  5. Step 5: Solve for x
    x = 783,295,415,105.28/828,987.20
  6. Step 6: Final answer
    x = 944,882.40

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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.