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Finding the Fourth Proportional to 1,294,634.40, 1,942,826.40 and 726,014.40

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Solution

The fourth proportional to 1,294,634.40, 1,942,826.40 and 726,014.40 is: 1,089,512.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,294,634.40 : 1,942,826.40 = 726,014.40 : x
  2. Step 2: Convert to fraction form
    1,294,634.40/1,942,826.40 = 726,014.40/x
  3. Step 3: Cross multiply
    1,294,634.40x = 1,942,826.40 × 726,014.40
  4. Step 4: Simplify right side
    1,294,634.40x = 1,410,519,943,100.16
  5. Step 5: Solve for x
    x = 1,410,519,943,100.16/1,294,634.40
  6. Step 6: Final answer
    x = 1,089,512.18

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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.