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Finding the Fourth Proportional to 652,121.20, 978,181.80 and 297,827.20

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Solution

The fourth proportional to 652,121.20, 978,181.80 and 297,827.20 is: 446,740.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,121.20 : 978,181.80 = 297,827.20 : x
  2. Step 2: Convert to fraction form
    652,121.20/978,181.80 = 297,827.20/x
  3. Step 3: Cross multiply
    652,121.20x = 978,181.80 × 297,827.20
  4. Step 4: Simplify right side
    652,121.20x = 291,329,146,584.96
  5. Step 5: Solve for x
    x = 291,329,146,584.96/652,121.20
  6. Step 6: Final answer
    x = 446,740.80

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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.