Home / 543,372.20-815,058.30-318,840.20

Finding the Fourth Proportional to 543,372.20, 815,058.30 and 318,840.20

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Solution

The fourth proportional to 543,372.20, 815,058.30 and 318,840.20 is: 478,260.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,372.20 : 815,058.30 = 318,840.20 : x
  2. Step 2: Convert to fraction form
    543,372.20/815,058.30 = 318,840.20/x
  3. Step 3: Cross multiply
    543,372.20x = 815,058.30 × 318,840.20
  4. Step 4: Simplify right side
    543,372.20x = 259,873,351,383.66
  5. Step 5: Solve for x
    x = 259,873,351,383.66/543,372.20
  6. Step 6: Final answer
    x = 478,260.30

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Double scale
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Similar ratio
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1.5x scale

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.