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Finding the Fourth Proportional to 721,057, 1,081,588.38 and 195,745

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Solution

The fourth proportional to 721,057, 1,081,588.38 and 195,745 is: 293,618.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,057 : 1,081,588.38 = 195,745 : x
  2. Step 2: Convert to fraction form
    721,057/1,081,588.38 = 195,745/x
  3. Step 3: Cross multiply
    721,057x = 1,081,588.38 × 195,745
  4. Step 4: Simplify right side
    721,057x = 211,715,517,443.10
  5. Step 5: Solve for x
    x = 211,715,517,443.10/721,057
  6. Step 6: Final answer
    x = 293,618.28

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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.