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Finding the Fourth Proportional to 393,669.60, 552,187.20 and 393,669.60

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Solution

The fourth proportional to 393,669.60, 552,187.20 and 393,669.60 is: 552,187.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,669.60 : 552,187.20 = 393,669.60 : x
  2. Step 2: Convert to fraction form
    393,669.60/552,187.20 = 393,669.60/x
  3. Step 3: Cross multiply
    393,669.60x = 552,187.20 × 393,669.60
  4. Step 4: Simplify right side
    393,669.60x = 217,379,314,149.12
  5. Step 5: Solve for x
    x = 217,379,314,149.12/393,669.60
  6. Step 6: Final answer
    x = 552,187.20

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.