Home / 1,276,719.07-1,915,358.94-378,231.16

Finding the Fourth Proportional to 1,276,719.07, 1,915,358.94 and 378,231.16

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Solution

The fourth proportional to 1,276,719.07, 1,915,358.94 and 378,231.16 is: 567,429.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276,719.07 : 1,915,358.94 = 378,231.16 : x
  2. Step 2: Convert to fraction form
    1,276,719.07/1,915,358.94 = 378,231.16/x
  3. Step 3: Cross multiply
    1,276,719.07x = 1,915,358.94 × 378,231.16
  4. Step 4: Simplify right side
    1,276,719.07x = 724,448,433,692.57
  5. Step 5: Solve for x
    x = 724,448,433,692.57/1,276,719.07
  6. Step 6: Final answer
    x = 567,429.79

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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.