Home / 1,079,263.10-1,489,578.05-643,708.38

Finding the Fourth Proportional to 1,079,263.10, 1,489,578.05 and 643,708.38

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Solution

The fourth proportional to 1,079,263.10, 1,489,578.05 and 643,708.38 is: 888,433.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,079,263.10 : 1,489,578.05 = 643,708.38 : x
  2. Step 2: Convert to fraction form
    1,079,263.10/1,489,578.05 = 643,708.38/x
  3. Step 3: Cross multiply
    1,079,263.10x = 1,489,578.05 × 643,708.38
  4. Step 4: Simplify right side
    1,079,263.10x = 958,853,880,644.25
  5. Step 5: Solve for x
    x = 958,853,880,644.25/1,079,263.10
  6. Step 6: Final answer
    x = 888,433.86

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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.