Home / 558,058.98-768,819.51-387,997.86

Finding the Fourth Proportional to 558,058.98, 768,819.51 and 387,997.86

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Solution

The fourth proportional to 558,058.98, 768,819.51 and 387,997.86 is: 534,531.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,058.98 : 768,819.51 = 387,997.86 : x
  2. Step 2: Convert to fraction form
    558,058.98/768,819.51 = 387,997.86/x
  3. Step 3: Cross multiply
    558,058.98x = 768,819.51 × 387,997.86
  4. Step 4: Simplify right side
    558,058.98x = 298,300,324,606.25
  5. Step 5: Solve for x
    x = 298,300,324,606.25/558,058.98
  6. Step 6: Final answer
    x = 534,531.90

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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.