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Finding the Fourth Proportional to 652,110.80, 978,166.20 and 400,168.40

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Solution

The fourth proportional to 652,110.80, 978,166.20 and 400,168.40 is: 600,252.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,110.80 : 978,166.20 = 400,168.40 : x
  2. Step 2: Convert to fraction form
    652,110.80/978,166.20 = 400,168.40/x
  3. Step 3: Cross multiply
    652,110.80x = 978,166.20 × 400,168.40
  4. Step 4: Simplify right side
    652,110.80x = 391,431,203,188.08
  5. Step 5: Solve for x
    x = 391,431,203,188.08/652,110.80
  6. Step 6: Final answer
    x = 600,252.60

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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.