Home / 390,058.20-585,087.30-327,072.60

Finding the Fourth Proportional to 390,058.20, 585,087.30 and 327,072.60

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Solution

The fourth proportional to 390,058.20, 585,087.30 and 327,072.60 is: 490,608.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,058.20 : 585,087.30 = 327,072.60 : x
  2. Step 2: Convert to fraction form
    390,058.20/585,087.30 = 327,072.60/x
  3. Step 3: Cross multiply
    390,058.20x = 585,087.30 × 327,072.60
  4. Step 4: Simplify right side
    390,058.20x = 191,366,024,437.98
  5. Step 5: Solve for x
    x = 191,366,024,437.98/390,058.20
  6. Step 6: Final answer
    x = 490,608.90

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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.