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Finding the Fourth Proportional to 347,640.10, 487,745.90 and 347,640.10

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Solution

The fourth proportional to 347,640.10, 487,745.90 and 347,640.10 is: 487,745.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,640.10 : 487,745.90 = 347,640.10 : x
  2. Step 2: Convert to fraction form
    347,640.10/487,745.90 = 347,640.10/x
  3. Step 3: Cross multiply
    347,640.10x = 487,745.90 × 347,640.10
  4. Step 4: Simplify right side
    347,640.10x = 169,560,033,450.59
  5. Step 5: Solve for x
    x = 169,560,033,450.59/347,640.10
  6. Step 6: Final answer
    x = 487,745.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.