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Finding the Fourth Proportional to 551,818.40, 826,634.10 and 486,062.60

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Solution

The fourth proportional to 551,818.40, 826,634.10 and 486,062.60 is: 728,130.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,818.40 : 826,634.10 = 486,062.60 : x
  2. Step 2: Convert to fraction form
    551,818.40/826,634.10 = 486,062.60/x
  3. Step 3: Cross multiply
    551,818.40x = 826,634.10 × 486,062.60
  4. Step 4: Simplify right side
    551,818.40x = 401,795,919,894.66
  5. Step 5: Solve for x
    x = 401,795,919,894.66/551,818.40
  6. Step 6: Final answer
    x = 728,130.70

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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.