Home / 1,231,876.58-1,699,742.78-687,928.67

Finding the Fourth Proportional to 1,231,876.58, 1,699,742.78 and 687,928.67

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Solution

The fourth proportional to 1,231,876.58, 1,699,742.78 and 687,928.67 is: 949,203.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231,876.58 : 1,699,742.78 = 687,928.67 : x
  2. Step 2: Convert to fraction form
    1,231,876.58/1,699,742.78 = 687,928.67/x
  3. Step 3: Cross multiply
    1,231,876.58x = 1,699,742.78 × 687,928.67
  4. Step 4: Simplify right side
    1,231,876.58x = 1,169,301,787,002.91
  5. Step 5: Solve for x
    x = 1,169,301,787,002.91/1,231,876.58
  6. Step 6: Final answer
    x = 949,203.69

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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.