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Finding the Fourth Proportional to 653,910.60, 980,136.90 and 254,418.60

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Solution

The fourth proportional to 653,910.60, 980,136.90 and 254,418.60 is: 381,344.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,910.60 : 980,136.90 = 254,418.60 : x
  2. Step 2: Convert to fraction form
    653,910.60/980,136.90 = 254,418.60/x
  3. Step 3: Cross multiply
    653,910.60x = 980,136.90 × 254,418.60
  4. Step 4: Simplify right side
    653,910.60x = 249,365,057,906.34
  5. Step 5: Solve for x
    x = 249,365,057,906.34/653,910.60
  6. Step 6: Final answer
    x = 381,344.27

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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.