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Finding the Fourth Proportional to 547,514.83, 755,562.42 and 305,800.75

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Solution

The fourth proportional to 547,514.83, 755,562.42 and 305,800.75 is: 422,000.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,514.83 : 755,562.42 = 305,800.75 : x
  2. Step 2: Convert to fraction form
    547,514.83/755,562.42 = 305,800.75/x
  3. Step 3: Cross multiply
    547,514.83x = 755,562.42 × 305,800.75
  4. Step 4: Simplify right side
    547,514.83x = 231,051,554,707.82
  5. Step 5: Solve for x
    x = 231,051,554,707.82/547,514.83
  6. Step 6: Final answer
    x = 422,000.54

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Double scale
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1.5x scale

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.