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Finding the Fourth Proportional to 647,640.60, 971,462.73 and 248,403.75

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Solution

The fourth proportional to 647,640.60, 971,462.73 and 248,403.75 is: 372,606.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,640.60 : 971,462.73 = 248,403.75 : x
  2. Step 2: Convert to fraction form
    647,640.60/971,462.73 = 248,403.75/x
  3. Step 3: Cross multiply
    647,640.60x = 971,462.73 × 248,403.75
  4. Step 4: Simplify right side
    647,640.60x = 241,314,983,875.22
  5. Step 5: Solve for x
    x = 241,314,983,875.22/647,640.60
  6. Step 6: Final answer
    x = 372,606.32

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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.