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Finding the Fourth Proportional to 552,628.80, 828,943.20 and 412,660.80

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Solution

The fourth proportional to 552,628.80, 828,943.20 and 412,660.80 is: 618,991.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,628.80 : 828,943.20 = 412,660.80 : x
  2. Step 2: Convert to fraction form
    552,628.80/828,943.20 = 412,660.80/x
  3. Step 3: Cross multiply
    552,628.80x = 828,943.20 × 412,660.80
  4. Step 4: Simplify right side
    552,628.80x = 342,072,364,066.56
  5. Step 5: Solve for x
    x = 342,072,364,066.56/552,628.80
  6. Step 6: Final answer
    x = 618,991.20

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Similar ratio
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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.