Home / 639,637.92-882,694.37-353,160.05

Finding the Fourth Proportional to 639,637.92, 882,694.37 and 353,160.05

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Solution

The fourth proportional to 639,637.92, 882,694.37 and 353,160.05 is: 487,357.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,637.92 : 882,694.37 = 353,160.05 : x
  2. Step 2: Convert to fraction form
    639,637.92/882,694.37 = 353,160.05/x
  3. Step 3: Cross multiply
    639,637.92x = 882,694.37 × 353,160.05
  4. Step 4: Simplify right side
    639,637.92x = 311,732,384,313.35
  5. Step 5: Solve for x
    x = 311,732,384,313.35/639,637.92
  6. Step 6: Final answer
    x = 487,357.57

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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.