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Finding the Fourth Proportional to 978,268.20, 1,467,329.40 and 409,502.40

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Solution

The fourth proportional to 978,268.20, 1,467,329.40 and 409,502.40 is: 614,223.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,268.20 : 1,467,329.40 = 409,502.40 : x
  2. Step 2: Convert to fraction form
    978,268.20/1,467,329.40 = 409,502.40/x
  3. Step 3: Cross multiply
    978,268.20x = 1,467,329.40 × 409,502.40
  4. Step 4: Simplify right side
    978,268.20x = 600,874,910,890.56
  5. Step 5: Solve for x
    x = 600,874,910,890.56/978,268.20
  6. Step 6: Final answer
    x = 614,223.08

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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.