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Finding the Fourth Proportional to 1,293,509.89, 1,938,793.52 and 786,954.25

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Solution

The fourth proportional to 1,293,509.89, 1,938,793.52 and 786,954.25 is: 1,179,536.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,293,509.89 : 1,938,793.52 = 786,954.25 : x
  2. Step 2: Convert to fraction form
    1,293,509.89/1,938,793.52 = 786,954.25/x
  3. Step 3: Cross multiply
    1,293,509.89x = 1,938,793.52 × 786,954.25
  4. Step 4: Simplify right side
    1,293,509.89x = 1,525,741,800,436.46
  5. Step 5: Solve for x
    x = 1,525,741,800,436.46/1,293,509.89
  6. Step 6: Final answer
    x = 1,179,536.25

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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.