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Finding the Fourth Proportional to 645,100.80, 966,484.80 and 551,788.80

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Solution

The fourth proportional to 645,100.80, 966,484.80 and 551,788.80 is: 826,685.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,100.80 : 966,484.80 = 551,788.80 : x
  2. Step 2: Convert to fraction form
    645,100.80/966,484.80 = 551,788.80/x
  3. Step 3: Cross multiply
    645,100.80x = 966,484.80 × 551,788.80
  4. Step 4: Simplify right side
    645,100.80x = 533,295,488,010.24
  5. Step 5: Solve for x
    x = 533,295,488,010.24/645,100.80
  6. Step 6: Final answer
    x = 826,685.52

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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.