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Finding the Fourth Proportional to 652,115.30, 978,172.95 and 372,179.30

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Solution

The fourth proportional to 652,115.30, 978,172.95 and 372,179.30 is: 558,268.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,115.30 : 978,172.95 = 372,179.30 : x
  2. Step 2: Convert to fraction form
    652,115.30/978,172.95 = 372,179.30/x
  3. Step 3: Cross multiply
    652,115.30x = 978,172.95 × 372,179.30
  4. Step 4: Simplify right side
    652,115.30x = 364,055,723,809.94
  5. Step 5: Solve for x
    x = 364,055,723,809.94/652,115.30
  6. Step 6: Final answer
    x = 558,268.95

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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.