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Finding the Fourth Proportional to 449,539.40, 620,737.62 and 299,318.60

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Solution

The fourth proportional to 449,539.40, 620,737.62 and 299,318.60 is: 413,308.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,539.40 : 620,737.62 = 299,318.60 : x
  2. Step 2: Convert to fraction form
    449,539.40/620,737.62 = 299,318.60/x
  3. Step 3: Cross multiply
    449,539.40x = 620,737.62 × 299,318.60
  4. Step 4: Simplify right side
    449,539.40x = 185,798,315,385.73
  5. Step 5: Solve for x
    x = 185,798,315,385.73/449,539.40
  6. Step 6: Final answer
    x = 413,308.19

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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.