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Finding the Fourth Proportional to 552,112.80, 828,169.20 and 489,127.20

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Solution

The fourth proportional to 552,112.80, 828,169.20 and 489,127.20 is: 733,690.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,112.80 : 828,169.20 = 489,127.20 : x
  2. Step 2: Convert to fraction form
    552,112.80/828,169.20 = 489,127.20/x
  3. Step 3: Cross multiply
    552,112.80x = 828,169.20 × 489,127.20
  4. Step 4: Simplify right side
    552,112.80x = 405,080,081,922.24
  5. Step 5: Solve for x
    x = 405,080,081,922.24/552,112.80
  6. Step 6: Final answer
    x = 733,690.80

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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.