Home / 1,126,619.76-1,689,930.86-285,171.51

Finding the Fourth Proportional to 1,126,619.76, 1,689,930.86 and 285,171.51

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Solution

The fourth proportional to 1,126,619.76, 1,689,930.86 and 285,171.51 is: 427,757.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,126,619.76 : 1,689,930.86 = 285,171.51 : x
  2. Step 2: Convert to fraction form
    1,126,619.76/1,689,930.86 = 285,171.51/x
  3. Step 3: Cross multiply
    1,126,619.76x = 1,689,930.86 × 285,171.51
  4. Step 4: Simplify right side
    1,126,619.76x = 481,920,133,715.94
  5. Step 5: Solve for x
    x = 481,920,133,715.94/1,126,619.76
  6. Step 6: Final answer
    x = 427,757.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.