Home / 389,621.80-584,432.70-327,620.35

Finding the Fourth Proportional to 389,621.80, 584,432.70 and 327,620.35

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Solution

The fourth proportional to 389,621.80, 584,432.70 and 327,620.35 is: 491,430.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,621.80 : 584,432.70 = 327,620.35 : x
  2. Step 2: Convert to fraction form
    389,621.80/584,432.70 = 327,620.35/x
  3. Step 3: Cross multiply
    389,621.80x = 584,432.70 × 327,620.35
  4. Step 4: Simplify right side
    389,621.80x = 191,472,045,725.45
  5. Step 5: Solve for x
    x = 191,472,045,725.45/389,621.80
  6. Step 6: Final answer
    x = 491,430.53

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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.