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Finding the Fourth Proportional to 1,160,997.60, 1,739,834.96 and 661,329.12

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Solution

The fourth proportional to 1,160,997.60, 1,739,834.96 and 661,329.12 is: 991,047.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,160,997.60 : 1,739,834.96 = 661,329.12 : x
  2. Step 2: Convert to fraction form
    1,160,997.60/1,739,834.96 = 661,329.12/x
  3. Step 3: Cross multiply
    1,160,997.60x = 1,739,834.96 × 661,329.12
  4. Step 4: Simplify right side
    1,160,997.60x = 1,150,603,523,042.04
  5. Step 5: Solve for x
    x = 1,150,603,523,042.04/1,160,997.60
  6. Step 6: Final answer
    x = 991,047.29

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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.