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Finding the Fourth Proportional to 630,864.74, 868,383.59 and 550,149.86

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Solution

The fourth proportional to 630,864.74, 868,383.59 and 550,149.86 is: 757,279.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,864.74 : 868,383.59 = 550,149.86 : x
  2. Step 2: Convert to fraction form
    630,864.74/868,383.59 = 550,149.86/x
  3. Step 3: Cross multiply
    630,864.74x = 868,383.59 × 550,149.86
  4. Step 4: Simplify right side
    630,864.74x = 477,741,110,464.80
  5. Step 5: Solve for x
    x = 477,741,110,464.80/630,864.74
  6. Step 6: Final answer
    x = 757,279.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.