Home / 1,188,601.76-1,639,871.52-678,943.28

Finding the Fourth Proportional to 1,188,601.76, 1,639,871.52 and 678,943.28

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Solution

The fourth proportional to 1,188,601.76, 1,639,871.52 and 678,943.28 is: 936,713.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,601.76 : 1,639,871.52 = 678,943.28 : x
  2. Step 2: Convert to fraction form
    1,188,601.76/1,639,871.52 = 678,943.28/x
  3. Step 3: Cross multiply
    1,188,601.76x = 1,639,871.52 × 678,943.28
  4. Step 4: Simplify right side
    1,188,601.76x = 1,113,379,748,567.39
  5. Step 5: Solve for x
    x = 1,113,379,748,567.39/1,188,601.76
  6. Step 6: Final answer
    x = 936,713.87

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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.