Home / 1,091,217.72-1,505,956.14-661,515.96

Finding the Fourth Proportional to 1,091,217.72, 1,505,956.14 and 661,515.96

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Solution

The fourth proportional to 1,091,217.72, 1,505,956.14 and 661,515.96 is: 912,937.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,091,217.72 : 1,505,956.14 = 661,515.96 : x
  2. Step 2: Convert to fraction form
    1,091,217.72/1,505,956.14 = 661,515.96/x
  3. Step 3: Cross multiply
    1,091,217.72x = 1,505,956.14 × 661,515.96
  4. Step 4: Simplify right side
    1,091,217.72x = 996,214,021,669.99
  5. Step 5: Solve for x
    x = 996,214,021,669.99/1,091,217.72
  6. Step 6: Final answer
    x = 912,937.91

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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.