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Finding the Fourth Proportional to 652,218.40, 978,497.70 and 252,872.20

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Solution

The fourth proportional to 652,218.40, 978,497.70 and 252,872.20 is: 379,374.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,218.40 : 978,497.70 = 252,872.20 : x
  2. Step 2: Convert to fraction form
    652,218.40/978,497.70 = 252,872.20/x
  3. Step 3: Cross multiply
    652,218.40x = 978,497.70 × 252,872.20
  4. Step 4: Simplify right side
    652,218.40x = 247,434,866,093.94
  5. Step 5: Solve for x
    x = 247,434,866,093.94/652,218.40
  6. Step 6: Final answer
    x = 379,374.25

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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.