Home / 761,679.36-1,051,118.37-422,147.88

Finding the Fourth Proportional to 761,679.36, 1,051,118.37 and 422,147.88

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Solution

The fourth proportional to 761,679.36, 1,051,118.37 and 422,147.88 is: 582,564.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    761,679.36 : 1,051,118.37 = 422,147.88 : x
  2. Step 2: Convert to fraction form
    761,679.36/1,051,118.37 = 422,147.88/x
  3. Step 3: Cross multiply
    761,679.36x = 1,051,118.37 × 422,147.88
  4. Step 4: Simplify right side
    761,679.36x = 443,727,391,524.56
  5. Step 5: Solve for x
    x = 443,727,391,524.56/761,679.36
  6. Step 6: Final answer
    x = 582,564.55

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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.