Home / 925,216.20-1,388,342.70-392,646.60

Finding the Fourth Proportional to 925,216.20, 1,388,342.70 and 392,646.60

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Solution

The fourth proportional to 925,216.20, 1,388,342.70 and 392,646.60 is: 589,189.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    925,216.20 : 1,388,342.70 = 392,646.60 : x
  2. Step 2: Convert to fraction form
    925,216.20/1,388,342.70 = 392,646.60/x
  3. Step 3: Cross multiply
    925,216.20x = 1,388,342.70 × 392,646.60
  4. Step 4: Simplify right side
    925,216.20x = 545,128,040,789.82
  5. Step 5: Solve for x
    x = 545,128,040,789.82/925,216.20
  6. Step 6: Final answer
    x = 589,189.90

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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.