Home / 1,211,661.38-1,672,071-660,382.04

Finding the Fourth Proportional to 1,211,661.38, 1,672,071 and 660,382.04

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Solution

The fourth proportional to 1,211,661.38, 1,672,071 and 660,382.04 is: 911,315.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,661.38 : 1,672,071 = 660,382.04 : x
  2. Step 2: Convert to fraction form
    1,211,661.38/1,672,071 = 660,382.04/x
  3. Step 3: Cross multiply
    1,211,661.38x = 1,672,071 × 660,382.04
  4. Step 4: Simplify right side
    1,211,661.38x = 1,104,205,662,185.02
  5. Step 5: Solve for x
    x = 1,104,205,662,185.02/1,211,661.38
  6. Step 6: Final answer
    x = 911,315.39

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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.