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Finding the Fourth Proportional to 493,292.40, 739,938.60 and 343,993.20

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Solution

The fourth proportional to 493,292.40, 739,938.60 and 343,993.20 is: 515,989.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,292.40 : 739,938.60 = 343,993.20 : x
  2. Step 2: Convert to fraction form
    493,292.40/739,938.60 = 343,993.20/x
  3. Step 3: Cross multiply
    493,292.40x = 739,938.60 × 343,993.20
  4. Step 4: Simplify right side
    493,292.40x = 254,533,846,817.52
  5. Step 5: Solve for x
    x = 254,533,846,817.52/493,292.40
  6. Step 6: Final answer
    x = 515,989.80

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Similar ratio
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1.5x scale

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.