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Finding the Fourth Proportional to 1,868,778.60, 2,804,480.10 and 804,584.40

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Solution

The fourth proportional to 1,868,778.60, 2,804,480.10 and 804,584.40 is: 1,207,441.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,868,778.60 : 2,804,480.10 = 804,584.40 : x
  2. Step 2: Convert to fraction form
    1,868,778.60/2,804,480.10 = 804,584.40/x
  3. Step 3: Cross multiply
    1,868,778.60x = 2,804,480.10 × 804,584.40
  4. Step 4: Simplify right side
    1,868,778.60x = 2,256,440,938,570.44
  5. Step 5: Solve for x
    x = 2,256,440,938,570.44/1,868,778.60
  6. Step 6: Final answer
    x = 1,207,441.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.