Home / 1,238,515.20-1,857,772.80-765,734.40

Finding the Fourth Proportional to 1,238,515.20, 1,857,772.80 and 765,734.40

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Solution

The fourth proportional to 1,238,515.20, 1,857,772.80 and 765,734.40 is: 1,148,601.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,515.20 : 1,857,772.80 = 765,734.40 : x
  2. Step 2: Convert to fraction form
    1,238,515.20/1,857,772.80 = 765,734.40/x
  3. Step 3: Cross multiply
    1,238,515.20x = 1,857,772.80 × 765,734.40
  4. Step 4: Simplify right side
    1,238,515.20x = 1,422,560,540,344.32
  5. Step 5: Solve for x
    x = 1,422,560,540,344.32/1,238,515.20
  6. Step 6: Final answer
    x = 1,148,601.60

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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.