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Finding the Fourth Proportional to 551,045.70, 826,568.55 and 486,091.80

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Solution

The fourth proportional to 551,045.70, 826,568.55 and 486,091.80 is: 729,137.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,045.70 : 826,568.55 = 486,091.80 : x
  2. Step 2: Convert to fraction form
    551,045.70/826,568.55 = 486,091.80/x
  3. Step 3: Cross multiply
    551,045.70x = 826,568.55 × 486,091.80
  4. Step 4: Simplify right side
    551,045.70x = 401,788,194,292.89
  5. Step 5: Solve for x
    x = 401,788,194,292.89/551,045.70
  6. Step 6: Final answer
    x = 729,137.70

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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.