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Finding the Fourth Proportional to 561,769.43, 775,241.66 and 307,120.61

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Solution

The fourth proportional to 561,769.43, 775,241.66 and 307,120.61 is: 423,826.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,769.43 : 775,241.66 = 307,120.61 : x
  2. Step 2: Convert to fraction form
    561,769.43/775,241.66 = 307,120.61/x
  3. Step 3: Cross multiply
    561,769.43x = 775,241.66 × 307,120.61
  4. Step 4: Simplify right side
    561,769.43x = 238,092,686,104.80
  5. Step 5: Solve for x
    x = 238,092,686,104.80/561,769.43
  6. Step 6: Final answer
    x = 423,826.35

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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.