Home / 873,119.36-1,309,679.39-392,786.12

Finding the Fourth Proportional to 873,119.36, 1,309,679.39 and 392,786.12

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Solution

The fourth proportional to 873,119.36, 1,309,679.39 and 392,786.12 is: 589,179.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    873,119.36 : 1,309,679.39 = 392,786.12 : x
  2. Step 2: Convert to fraction form
    873,119.36/1,309,679.39 = 392,786.12/x
  3. Step 3: Cross multiply
    873,119.36x = 1,309,679.39 × 392,786.12
  4. Step 4: Simplify right side
    873,119.36x = 514,423,886,042.07
  5. Step 5: Solve for x
    x = 514,423,886,042.07/873,119.36
  6. Step 6: Final answer
    x = 589,179.34

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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.