Home / 1,187,592.82-1,638,834.18-643,716.93

Finding the Fourth Proportional to 1,187,592.82, 1,638,834.18 and 643,716.93

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Solution

The fourth proportional to 1,187,592.82, 1,638,834.18 and 643,716.93 is: 888,305.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,592.82 : 1,638,834.18 = 643,716.93 : x
  2. Step 2: Convert to fraction form
    1,187,592.82/1,638,834.18 = 643,716.93/x
  3. Step 3: Cross multiply
    1,187,592.82x = 1,638,834.18 × 643,716.93
  4. Step 4: Simplify right side
    1,187,592.82x = 1,054,945,307,128.67
  5. Step 5: Solve for x
    x = 1,054,945,307,128.67/1,187,592.82
  6. Step 6: Final answer
    x = 888,305.56

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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.