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Finding the Fourth Proportional to 644,812.80, 966,052.80 and 551,500.80

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Solution

The fourth proportional to 644,812.80, 966,052.80 and 551,500.80 is: 826,253.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,812.80 : 966,052.80 = 551,500.80 : x
  2. Step 2: Convert to fraction form
    644,812.80/966,052.80 = 551,500.80/x
  3. Step 3: Cross multiply
    644,812.80x = 966,052.80 × 551,500.80
  4. Step 4: Simplify right side
    644,812.80x = 532,778,892,042.24
  5. Step 5: Solve for x
    x = 532,778,892,042.24/644,812.80
  6. Step 6: Final answer
    x = 826,253.59

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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.