Home / 1,005,072.45-1,387,323.22-643,470.23

Finding the Fourth Proportional to 1,005,072.45, 1,387,323.22 and 643,470.23

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Solution

The fourth proportional to 1,005,072.45, 1,387,323.22 and 643,470.23 is: 888,195.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,005,072.45 : 1,387,323.22 = 643,470.23 : x
  2. Step 2: Convert to fraction form
    1,005,072.45/1,387,323.22 = 643,470.23/x
  3. Step 3: Cross multiply
    1,005,072.45x = 1,387,323.22 × 643,470.23
  4. Step 4: Simplify right side
    1,005,072.45x = 892,701,188,529.95
  5. Step 5: Solve for x
    x = 892,701,188,529.95/1,005,072.45
  6. Step 6: Final answer
    x = 888,195.86

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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.