Home / 925,688.20-1,388,260.14-393,205

Finding the Fourth Proportional to 925,688.20, 1,388,260.14 and 393,205

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Solution

The fourth proportional to 925,688.20, 1,388,260.14 and 393,205 is: 589,691.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    925,688.20 : 1,388,260.14 = 393,205 : x
  2. Step 2: Convert to fraction form
    925,688.20/1,388,260.14 = 393,205/x
  3. Step 3: Cross multiply
    925,688.20x = 1,388,260.14 × 393,205
  4. Step 4: Simplify right side
    925,688.20x = 545,870,828,348.70
  5. Step 5: Solve for x
    x = 545,870,828,348.70/925,688.20
  6. Step 6: Final answer
    x = 589,691.89

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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.