Home / 1,387,582.16-2,081,340.82-639,628.16

Finding the Fourth Proportional to 1,387,582.16, 2,081,340.82 and 639,628.16

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Solution

The fourth proportional to 1,387,582.16, 2,081,340.82 and 639,628.16 is: 959,427.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387,582.16 : 2,081,340.82 = 639,628.16 : x
  2. Step 2: Convert to fraction form
    1,387,582.16/2,081,340.82 = 639,628.16/x
  3. Step 3: Cross multiply
    1,387,582.16x = 2,081,340.82 × 639,628.16
  4. Step 4: Simplify right side
    1,387,582.16x = 1,331,284,187,023.72
  5. Step 5: Solve for x
    x = 1,331,284,187,023.72/1,387,582.16
  6. Step 6: Final answer
    x = 959,427.29

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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.