Home / 1,640,679.15-2,264,137.36-905,633.60

Finding the Fourth Proportional to 1,640,679.15, 2,264,137.36 and 905,633.60

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Solution

The fourth proportional to 1,640,679.15, 2,264,137.36 and 905,633.60 is: 1,249,774.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,640,679.15 : 2,264,137.36 = 905,633.60 : x
  2. Step 2: Convert to fraction form
    1,640,679.15/2,264,137.36 = 905,633.60/x
  3. Step 3: Cross multiply
    1,640,679.15x = 2,264,137.36 × 905,633.60
  4. Step 4: Simplify right side
    1,640,679.15x = 2,050,478,867,382.30
  5. Step 5: Solve for x
    x = 2,050,478,867,382.30/1,640,679.15
  6. Step 6: Final answer
    x = 1,249,774.44

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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.