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Finding the Fourth Proportional to 539,348.87, 743,987.16 and 345,687.59

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Solution

The fourth proportional to 539,348.87, 743,987.16 and 345,687.59 is: 476,847.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,348.87 : 743,987.16 = 345,687.59 : x
  2. Step 2: Convert to fraction form
    539,348.87/743,987.16 = 345,687.59/x
  3. Step 3: Cross multiply
    539,348.87x = 743,987.16 × 345,687.59
  4. Step 4: Simplify right side
    539,348.87x = 257,187,124,611.41
  5. Step 5: Solve for x
    x = 257,187,124,611.41/539,348.87
  6. Step 6: Final answer
    x = 476,847.44

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1.5x scale

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.