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Finding the Fourth Proportional to 551,089.70, 826,634.55 and 545,840.90

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Solution

The fourth proportional to 551,089.70, 826,634.55 and 545,840.90 is: 818,761.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,089.70 : 826,634.55 = 545,840.90 : x
  2. Step 2: Convert to fraction form
    551,089.70/826,634.55 = 545,840.90/x
  3. Step 3: Cross multiply
    551,089.70x = 826,634.55 × 545,840.90
  4. Step 4: Simplify right side
    551,089.70x = 451,210,946,743.10
  5. Step 5: Solve for x
    x = 451,210,946,743.10/551,089.70
  6. Step 6: Final answer
    x = 818,761.35

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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.