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Finding the Fourth Proportional to 551,818.90, 826,634.85 and 486,063.10

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Solution

The fourth proportional to 551,818.90, 826,634.85 and 486,063.10 is: 728,131.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,818.90 : 826,634.85 = 486,063.10 : x
  2. Step 2: Convert to fraction form
    551,818.90/826,634.85 = 486,063.10/x
  3. Step 3: Cross multiply
    551,818.90x = 826,634.85 × 486,063.10
  4. Step 4: Simplify right side
    551,818.90x = 401,796,697,759.04
  5. Step 5: Solve for x
    x = 401,796,697,759.04/551,818.90
  6. Step 6: Final answer
    x = 728,131.45

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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.