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Finding the Fourth Proportional to 489,703.80, 734,555.70 and 449,268.60

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Solution

The fourth proportional to 489,703.80, 734,555.70 and 449,268.60 is: 673,902.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,703.80 : 734,555.70 = 449,268.60 : x
  2. Step 2: Convert to fraction form
    489,703.80/734,555.70 = 449,268.60/x
  3. Step 3: Cross multiply
    489,703.80x = 734,555.70 × 449,268.60
  4. Step 4: Simplify right side
    489,703.80x = 330,012,810,961.02
  5. Step 5: Solve for x
    x = 330,012,810,961.02/489,703.80
  6. Step 6: Final answer
    x = 673,902.90

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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.