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Finding the Fourth Proportional to 640,301.56, 960,618.39 and 340,535.65

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Solution

The fourth proportional to 640,301.56, 960,618.39 and 340,535.65 is: 510,891.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,301.56 : 960,618.39 = 340,535.65 : x
  2. Step 2: Convert to fraction form
    640,301.56/960,618.39 = 340,535.65/x
  3. Step 3: Cross multiply
    640,301.56x = 960,618.39 × 340,535.65
  4. Step 4: Simplify right side
    640,301.56x = 327,124,807,840.60
  5. Step 5: Solve for x
    x = 327,124,807,840.60/640,301.56
  6. Step 6: Final answer
    x = 510,891.79

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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.