Home / 639,409.14-882,384.69-352,929.30

Finding the Fourth Proportional to 639,409.14, 882,384.69 and 352,929.30

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Solution

The fourth proportional to 639,409.14, 882,384.69 and 352,929.30 is: 487,042.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,409.14 : 882,384.69 = 352,929.30 : x
  2. Step 2: Convert to fraction form
    639,409.14/882,384.69 = 352,929.30/x
  3. Step 3: Cross multiply
    639,409.14x = 882,384.69 × 352,929.30
  4. Step 4: Simplify right side
    639,409.14x = 311,419,410,972.42
  5. Step 5: Solve for x
    x = 311,419,410,972.42/639,409.14
  6. Step 6: Final answer
    x = 487,042.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.