Home / 761,408.36-1,050,743.54-421,876.61

Finding the Fourth Proportional to 761,408.36, 1,050,743.54 and 421,876.61

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Solution

The fourth proportional to 761,408.36, 1,050,743.54 and 421,876.61 is: 582,189.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    761,408.36 : 1,050,743.54 = 421,876.61 : x
  2. Step 2: Convert to fraction form
    761,408.36/1,050,743.54 = 421,876.61/x
  3. Step 3: Cross multiply
    761,408.36x = 1,050,743.54 × 421,876.61
  4. Step 4: Simplify right side
    761,408.36x = 443,284,122,634.60
  5. Step 5: Solve for x
    x = 443,284,122,634.60/761,408.36
  6. Step 6: Final answer
    x = 582,189.72

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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.