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Finding the Fourth Proportional to 449,242.59, 620,610.60 and 388,708.14

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Solution

The fourth proportional to 449,242.59, 620,610.60 and 388,708.14 is: 536,984.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,242.59 : 620,610.60 = 388,708.14 : x
  2. Step 2: Convert to fraction form
    449,242.59/620,610.60 = 388,708.14/x
  3. Step 3: Cross multiply
    449,242.59x = 620,610.60 × 388,708.14
  4. Step 4: Simplify right side
    449,242.59x = 241,236,391,990.28
  5. Step 5: Solve for x
    x = 241,236,391,990.28/449,242.59
  6. Step 6: Final answer
    x = 536,984.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.