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Finding the Fourth Proportional to 552,145.80, 828,218.70 and 489,160.20

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Solution

The fourth proportional to 552,145.80, 828,218.70 and 489,160.20 is: 733,740.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,145.80 : 828,218.70 = 489,160.20 : x
  2. Step 2: Convert to fraction form
    552,145.80/828,218.70 = 489,160.20/x
  3. Step 3: Cross multiply
    552,145.80x = 828,218.70 × 489,160.20
  4. Step 4: Simplify right side
    552,145.80x = 405,131,624,935.74
  5. Step 5: Solve for x
    x = 405,131,624,935.74/552,145.80
  6. Step 6: Final answer
    x = 733,740.30

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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.