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Finding the Fourth Proportional to 652,191.20, 978,286.80 and 403,013.60

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Solution

The fourth proportional to 652,191.20, 978,286.80 and 403,013.60 is: 604,520.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,191.20 : 978,286.80 = 403,013.60 : x
  2. Step 2: Convert to fraction form
    652,191.20/978,286.80 = 403,013.60/x
  3. Step 3: Cross multiply
    652,191.20x = 978,286.80 × 403,013.60
  4. Step 4: Simplify right side
    652,191.20x = 394,262,885,100.48
  5. Step 5: Solve for x
    x = 394,262,885,100.48/652,191.20
  6. Step 6: Final answer
    x = 604,520.40

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.