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Finding the Fourth Proportional to 551,081.70, 826,622.55 and 545,832.90

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Solution

The fourth proportional to 551,081.70, 826,622.55 and 545,832.90 is: 818,749.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,081.70 : 826,622.55 = 545,832.90 : x
  2. Step 2: Convert to fraction form
    551,081.70/826,622.55 = 545,832.90/x
  3. Step 3: Cross multiply
    551,081.70x = 826,622.55 × 545,832.90
  4. Step 4: Simplify right side
    551,081.70x = 451,197,783,671.90
  5. Step 5: Solve for x
    x = 451,197,783,671.90/551,081.70
  6. Step 6: Final answer
    x = 818,749.35

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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.