Home / 1,188,482.64-1,640,128.44-729,367.56

Finding the Fourth Proportional to 1,188,482.64, 1,640,128.44 and 729,367.56

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Solution

The fourth proportional to 1,188,482.64, 1,640,128.44 and 729,367.56 is: 1,006,540.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,482.64 : 1,640,128.44 = 729,367.56 : x
  2. Step 2: Convert to fraction form
    1,188,482.64/1,640,128.44 = 729,367.56/x
  3. Step 3: Cross multiply
    1,188,482.64x = 1,640,128.44 × 729,367.56
  4. Step 4: Simplify right side
    1,188,482.64x = 1,196,256,478,369.41
  5. Step 5: Solve for x
    x = 1,196,256,478,369.41/1,188,482.64
  6. Step 6: Final answer
    x = 1,006,540.98

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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.