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Finding the Fourth Proportional to 551,825.90, 826,645.35 and 486,070.10

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Solution

The fourth proportional to 551,825.90, 826,645.35 and 486,070.10 is: 728,141.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,825.90 : 826,645.35 = 486,070.10 : x
  2. Step 2: Convert to fraction form
    551,825.90/826,645.35 = 486,070.10/x
  3. Step 3: Cross multiply
    551,825.90x = 826,645.35 × 486,070.10
  4. Step 4: Simplify right side
    551,825.90x = 401,807,587,939.04
  5. Step 5: Solve for x
    x = 401,807,587,939.04/551,825.90
  6. Step 6: Final answer
    x = 728,141.95

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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.