Home / 1,188,167.32-1,639,757.64-678,858.76

Finding the Fourth Proportional to 1,188,167.32, 1,639,757.64 and 678,858.76

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Solution

The fourth proportional to 1,188,167.32, 1,639,757.64 and 678,858.76 is: 936,874.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,167.32 : 1,639,757.64 = 678,858.76 : x
  2. Step 2: Convert to fraction form
    1,188,167.32/1,639,757.64 = 678,858.76/x
  3. Step 3: Cross multiply
    1,188,167.32x = 1,639,757.64 × 678,858.76
  4. Step 4: Simplify right side
    1,188,167.32x = 1,113,163,838,190.93
  5. Step 5: Solve for x
    x = 1,113,163,838,190.93/1,188,167.32
  6. Step 6: Final answer
    x = 936,874.65

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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.