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Finding the Fourth Proportional to 561,867.56, 775,377.48 and 307,220.84

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Solution

The fourth proportional to 561,867.56, 775,377.48 and 307,220.84 is: 423,964.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,867.56 : 775,377.48 = 307,220.84 : x
  2. Step 2: Convert to fraction form
    561,867.56/775,377.48 = 307,220.84/x
  3. Step 3: Cross multiply
    561,867.56x = 775,377.48 × 307,220.84
  4. Step 4: Simplify right side
    561,867.56x = 238,212,120,722.68
  5. Step 5: Solve for x
    x = 238,212,120,722.68/561,867.56
  6. Step 6: Final answer
    x = 423,964.89

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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.