Home / 639,799.85-960,290.27-324,478.19

Finding the Fourth Proportional to 639,799.85, 960,290.27 and 324,478.19

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Solution

The fourth proportional to 639,799.85, 960,290.27 and 324,478.19 is: 487,016.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,799.85 : 960,290.27 = 324,478.19 : x
  2. Step 2: Convert to fraction form
    639,799.85/960,290.27 = 324,478.19/x
  3. Step 3: Cross multiply
    639,799.85x = 960,290.27 × 324,478.19
  4. Step 4: Simplify right side
    639,799.85x = 311,593,242,260.37
  5. Step 5: Solve for x
    x = 311,593,242,260.37/639,799.85
  6. Step 6: Final answer
    x = 487,016.75

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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.