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Finding the Fourth Proportional to 639,798.85, 960,288.76 and 324,477.19

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Solution

The fourth proportional to 639,798.85, 960,288.76 and 324,477.19 is: 487,015.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,798.85 : 960,288.76 = 324,477.19 : x
  2. Step 2: Convert to fraction form
    639,798.85/960,288.76 = 324,477.19/x
  3. Step 3: Cross multiply
    639,798.85x = 960,288.76 × 324,477.19
  4. Step 4: Simplify right side
    639,798.85x = 311,591,793,631.94
  5. Step 5: Solve for x
    x = 311,591,793,631.94/639,798.85
  6. Step 6: Final answer
    x = 487,015.25

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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.