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Finding the Fourth Proportional to 449,515.62, 620,858.13 and 357,941.46

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Solution

The fourth proportional to 449,515.62, 620,858.13 and 357,941.46 is: 494,378.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,515.62 : 620,858.13 = 357,941.46 : x
  2. Step 2: Convert to fraction form
    449,515.62/620,858.13 = 357,941.46/x
  3. Step 3: Cross multiply
    449,515.62x = 620,858.13 × 357,941.46
  4. Step 4: Simplify right side
    449,515.62x = 222,230,865,505.07
  5. Step 5: Solve for x
    x = 222,230,865,505.07/449,515.62
  6. Step 6: Final answer
    x = 494,378.52

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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.