Home / 1,217,896.77-1,680,639.66-666,600.24

Finding the Fourth Proportional to 1,217,896.77, 1,680,639.66 and 666,600.24

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Solution

The fourth proportional to 1,217,896.77, 1,680,639.66 and 666,600.24 is: 919,876.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,217,896.77 : 1,680,639.66 = 666,600.24 : x
  2. Step 2: Convert to fraction form
    1,217,896.77/1,680,639.66 = 666,600.24/x
  3. Step 3: Cross multiply
    1,217,896.77x = 1,680,639.66 × 666,600.24
  4. Step 4: Simplify right side
    1,217,896.77x = 1,120,314,800,709.52
  5. Step 5: Solve for x
    x = 1,120,314,800,709.52/1,217,896.77
  6. Step 6: Final answer
    x = 919,876.65

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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.