Home / 925,208.20-1,388,330.70-392,638.60

Finding the Fourth Proportional to 925,208.20, 1,388,330.70 and 392,638.60

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Solution

The fourth proportional to 925,208.20, 1,388,330.70 and 392,638.60 is: 589,177.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    925,208.20 : 1,388,330.70 = 392,638.60 : x
  2. Step 2: Convert to fraction form
    925,208.20/1,388,330.70 = 392,638.60/x
  3. Step 3: Cross multiply
    925,208.20x = 1,388,330.70 × 392,638.60
  4. Step 4: Simplify right side
    925,208.20x = 545,112,222,385.02
  5. Step 5: Solve for x
    x = 545,112,222,385.02/925,208.20
  6. Step 6: Final answer
    x = 589,177.90

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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.