Home / 1,188,223.07-1,639,748.76-644,358.75

Finding the Fourth Proportional to 1,188,223.07, 1,639,748.76 and 644,358.75

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Solution

The fourth proportional to 1,188,223.07, 1,639,748.76 and 644,358.75 is: 889,215.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,223.07 : 1,639,748.76 = 644,358.75 : x
  2. Step 2: Convert to fraction form
    1,188,223.07/1,639,748.76 = 644,358.75/x
  3. Step 3: Cross multiply
    1,188,223.07x = 1,639,748.76 × 644,358.75
  4. Step 4: Simplify right side
    1,188,223.07x = 1,056,586,456,366.76
  5. Step 5: Solve for x
    x = 1,056,586,456,366.76/1,188,223.07
  6. Step 6: Final answer
    x = 889,215.57

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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.