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Finding the Fourth Proportional to 551,777.40, 826,572.60 and 486,021.60

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Solution

The fourth proportional to 551,777.40, 826,572.60 and 486,021.60 is: 728,069.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,777.40 : 826,572.60 = 486,021.60 : x
  2. Step 2: Convert to fraction form
    551,777.40/826,572.60 = 486,021.60/x
  3. Step 3: Cross multiply
    551,777.40x = 826,572.60 × 486,021.60
  4. Step 4: Simplify right side
    551,777.40x = 401,732,137,568.16
  5. Step 5: Solve for x
    x = 401,732,137,568.16/551,777.40
  6. Step 6: Final answer
    x = 728,069.21

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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.