Home / 828,943.20-1,243,414.80-618,991.20

Finding the Fourth Proportional to 828,943.20, 1,243,414.80 and 618,991.20

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Solution

The fourth proportional to 828,943.20, 1,243,414.80 and 618,991.20 is: 928,486.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,943.20 : 1,243,414.80 = 618,991.20 : x
  2. Step 2: Convert to fraction form
    828,943.20/1,243,414.80 = 618,991.20/x
  3. Step 3: Cross multiply
    828,943.20x = 1,243,414.80 × 618,991.20
  4. Step 4: Simplify right side
    828,943.20x = 769,662,819,149.76
  5. Step 5: Solve for x
    x = 769,662,819,149.76/828,943.20
  6. Step 6: Final answer
    x = 928,486.80

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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.