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Finding the Fourth Proportional to 551,817.40, 826,632.60 and 486,061.60

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Solution

The fourth proportional to 551,817.40, 826,632.60 and 486,061.60 is: 728,129.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,817.40 : 826,632.60 = 486,061.60 : x
  2. Step 2: Convert to fraction form
    551,817.40/826,632.60 = 486,061.60/x
  3. Step 3: Cross multiply
    551,817.40x = 826,632.60 × 486,061.60
  4. Step 4: Simplify right side
    551,817.40x = 401,794,364,168.16
  5. Step 5: Solve for x
    x = 401,794,364,168.16/551,817.40
  6. Step 6: Final answer
    x = 728,129.20

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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.