Home / 1,188,366.88-1,639,947.20-644,502.56

Finding the Fourth Proportional to 1,188,366.88, 1,639,947.20 and 644,502.56

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Solution

The fourth proportional to 1,188,366.88, 1,639,947.20 and 644,502.56 is: 889,414.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,366.88 : 1,639,947.20 = 644,502.56 : x
  2. Step 2: Convert to fraction form
    1,188,366.88/1,639,947.20 = 644,502.56/x
  3. Step 3: Cross multiply
    1,188,366.88x = 1,639,947.20 × 644,502.56
  4. Step 4: Simplify right side
    1,188,366.88x = 1,056,950,168,664.83
  5. Step 5: Solve for x
    x = 1,056,950,168,664.83/1,188,366.88
  6. Step 6: Final answer
    x = 889,414.02

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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.