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Finding the Fourth Proportional to 552,079.20, 828,118.80 and 285,921.30

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Solution

The fourth proportional to 552,079.20, 828,118.80 and 285,921.30 is: 428,881.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,079.20 : 828,118.80 = 285,921.30 : x
  2. Step 2: Convert to fraction form
    552,079.20/828,118.80 = 285,921.30/x
  3. Step 3: Cross multiply
    552,079.20x = 828,118.80 × 285,921.30
  4. Step 4: Simplify right side
    552,079.20x = 236,776,803,850.44
  5. Step 5: Solve for x
    x = 236,776,803,850.44/552,079.20
  6. Step 6: Final answer
    x = 428,881.95

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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.