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Finding the Fourth Proportional to 978,369.40, 1,467,554.10 and 347,201.20

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Solution

The fourth proportional to 978,369.40, 1,467,554.10 and 347,201.20 is: 520,801.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,369.40 : 1,467,554.10 = 347,201.20 : x
  2. Step 2: Convert to fraction form
    978,369.40/1,467,554.10 = 347,201.20/x
  3. Step 3: Cross multiply
    978,369.40x = 1,467,554.10 × 347,201.20
  4. Step 4: Simplify right side
    978,369.40x = 509,536,544,584.92
  5. Step 5: Solve for x
    x = 509,536,544,584.92/978,369.40
  6. Step 6: Final answer
    x = 520,801.80

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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.