Home / 1,188,933.19-1,640,727.90-679,646.50

Finding the Fourth Proportional to 1,188,933.19, 1,640,727.90 and 679,646.50

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Solution

The fourth proportional to 1,188,933.19, 1,640,727.90 and 679,646.50 is: 937,912.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,933.19 : 1,640,727.90 = 679,646.50 : x
  2. Step 2: Convert to fraction form
    1,188,933.19/1,640,727.90 = 679,646.50/x
  3. Step 3: Cross multiply
    1,188,933.19x = 1,640,727.90 × 679,646.50
  4. Step 4: Simplify right side
    1,188,933.19x = 1,115,114,970,585.53
  5. Step 5: Solve for x
    x = 1,115,114,970,585.53/1,188,933.19
  6. Step 6: Final answer
    x = 937,912.22

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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.