Home / 639,836.48-960,345.12-324,514.82

Finding the Fourth Proportional to 639,836.48, 960,345.12 and 324,514.82

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Solution

The fourth proportional to 639,836.48, 960,345.12 and 324,514.82 is: 487,071.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,836.48 : 960,345.12 = 324,514.82 : x
  2. Step 2: Convert to fraction form
    639,836.48/960,345.12 = 324,514.82/x
  3. Step 3: Cross multiply
    639,836.48x = 960,345.12 × 324,514.82
  4. Step 4: Simplify right side
    639,836.48x = 311,646,223,754.68
  5. Step 5: Solve for x
    x = 311,646,223,754.68/639,836.48
  6. Step 6: Final answer
    x = 487,071.67

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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.