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Finding the Fourth Proportional to 656,910.97, 906,538.45 and 355,104.97

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Solution

The fourth proportional to 656,910.97, 906,538.45 and 355,104.97 is: 490,045.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,910.97 : 906,538.45 = 355,104.97 : x
  2. Step 2: Convert to fraction form
    656,910.97/906,538.45 = 355,104.97/x
  3. Step 3: Cross multiply
    656,910.97x = 906,538.45 × 355,104.97
  4. Step 4: Simplify right side
    656,910.97x = 321,916,309,091.10
  5. Step 5: Solve for x
    x = 321,916,309,091.10/656,910.97
  6. Step 6: Final answer
    x = 490,045.57

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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.