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Finding the Fourth Proportional to 551,819.90, 826,636.35 and 486,064.10

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Solution

The fourth proportional to 551,819.90, 826,636.35 and 486,064.10 is: 728,132.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,819.90 : 826,636.35 = 486,064.10 : x
  2. Step 2: Convert to fraction form
    551,819.90/826,636.35 = 486,064.10/x
  3. Step 3: Cross multiply
    551,819.90x = 826,636.35 × 486,064.10
  4. Step 4: Simplify right side
    551,819.90x = 401,798,253,490.04
  5. Step 5: Solve for x
    x = 401,798,253,490.04/551,819.90
  6. Step 6: Final answer
    x = 728,132.95

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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.