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Finding the Fourth Proportional to 652,369.60, 978,554.40 and 413,221.15

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Solution

The fourth proportional to 652,369.60, 978,554.40 and 413,221.15 is: 619,831.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,369.60 : 978,554.40 = 413,221.15 : x
  2. Step 2: Convert to fraction form
    652,369.60/978,554.40 = 413,221.15/x
  3. Step 3: Cross multiply
    652,369.60x = 978,554.40 × 413,221.15
  4. Step 4: Simplify right side
    652,369.60x = 404,359,374,505.56
  5. Step 5: Solve for x
    x = 404,359,374,505.56/652,369.60
  6. Step 6: Final answer
    x = 619,831.73

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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.