Home / 828,949.20-1,243,423.80-618,997.20

Finding the Fourth Proportional to 828,949.20, 1,243,423.80 and 618,997.20

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Solution

The fourth proportional to 828,949.20, 1,243,423.80 and 618,997.20 is: 928,495.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,949.20 : 1,243,423.80 = 618,997.20 : x
  2. Step 2: Convert to fraction form
    828,949.20/1,243,423.80 = 618,997.20/x
  3. Step 3: Cross multiply
    828,949.20x = 1,243,423.80 × 618,997.20
  4. Step 4: Simplify right side
    828,949.20x = 769,675,850,613.36
  5. Step 5: Solve for x
    x = 769,675,850,613.36/828,949.20
  6. Step 6: Final answer
    x = 928,495.80

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Double scale
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Similar ratio
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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.