Home / 1,388,276.70-2,081,032.65-639,015.90

Finding the Fourth Proportional to 1,388,276.70, 2,081,032.65 and 639,015.90

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Solution

The fourth proportional to 1,388,276.70, 2,081,032.65 and 639,015.90 is: 957,887.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388,276.70 : 2,081,032.65 = 639,015.90 : x
  2. Step 2: Convert to fraction form
    1,388,276.70/2,081,032.65 = 639,015.90/x
  3. Step 3: Cross multiply
    1,388,276.70x = 2,081,032.65 × 639,015.90
  4. Step 4: Simplify right side
    1,388,276.70x = 1,329,812,951,769.14
  5. Step 5: Solve for x
    x = 1,329,812,951,769.14/1,388,276.70
  6. Step 6: Final answer
    x = 957,887.54

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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.