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Finding the Fourth Proportional to 826,677, 1,238,860.26 and 446,778.72

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Solution

The fourth proportional to 826,677, 1,238,860.26 and 446,778.72 is: 669,543.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    826,677 : 1,238,860.26 = 446,778.72 : x
  2. Step 2: Convert to fraction form
    826,677/1,238,860.26 = 446,778.72/x
  3. Step 3: Cross multiply
    826,677x = 1,238,860.26 × 446,778.72
  4. Step 4: Simplify right side
    826,677x = 553,496,401,221.67
  5. Step 5: Solve for x
    x = 553,496,401,221.67/826,677
  6. Step 6: Final answer
    x = 669,543.73

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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.