Home / 1,229,820.87-1,842,147.91-780,310.36

Finding the Fourth Proportional to 1,229,820.87, 1,842,147.91 and 780,310.36

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Solution

The fourth proportional to 1,229,820.87, 1,842,147.91 and 780,310.36 is: 1,168,826.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,229,820.87 : 1,842,147.91 = 780,310.36 : x
  2. Step 2: Convert to fraction form
    1,229,820.87/1,842,147.91 = 780,310.36/x
  3. Step 3: Cross multiply
    1,229,820.87x = 1,842,147.91 × 780,310.36
  4. Step 4: Simplify right side
    1,229,820.87x = 1,437,447,085,713.06
  5. Step 5: Solve for x
    x = 1,437,447,085,713.06/1,229,820.87
  6. Step 6: Final answer
    x = 1,168,826.39

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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.