Home / 386,822.20-580,233.30-353,579.80

Finding the Fourth Proportional to 386,822.20, 580,233.30 and 353,579.80

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Solution

The fourth proportional to 386,822.20, 580,233.30 and 353,579.80 is: 530,369.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,822.20 : 580,233.30 = 353,579.80 : x
  2. Step 2: Convert to fraction form
    386,822.20/580,233.30 = 353,579.80/x
  3. Step 3: Cross multiply
    386,822.20x = 580,233.30 × 353,579.80
  4. Step 4: Simplify right side
    386,822.20x = 205,158,774,167.34
  5. Step 5: Solve for x
    x = 205,158,774,167.34/386,822.20
  6. Step 6: Final answer
    x = 530,369.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.