Home / 1,259,815.20-1,889,722.80-755,930.40

Finding the Fourth Proportional to 1,259,815.20, 1,889,722.80 and 755,930.40

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Solution

The fourth proportional to 1,259,815.20, 1,889,722.80 and 755,930.40 is: 1,133,895.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,259,815.20 : 1,889,722.80 = 755,930.40 : x
  2. Step 2: Convert to fraction form
    1,259,815.20/1,889,722.80 = 755,930.40/x
  3. Step 3: Cross multiply
    1,259,815.20x = 1,889,722.80 × 755,930.40
  4. Step 4: Simplify right side
    1,259,815.20x = 1,428,498,912,093.12
  5. Step 5: Solve for x
    x = 1,428,498,912,093.12/1,259,815.20
  6. Step 6: Final answer
    x = 1,133,895.60

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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.