Home / 639,468.76-882,474.18-352,988.92

Finding the Fourth Proportional to 639,468.76, 882,474.18 and 352,988.92

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Solution

The fourth proportional to 639,468.76, 882,474.18 and 352,988.92 is: 487,128.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,468.76 : 882,474.18 = 352,988.92 : x
  2. Step 2: Convert to fraction form
    639,468.76/882,474.18 = 352,988.92/x
  3. Step 3: Cross multiply
    639,468.76x = 882,474.18 × 352,988.92
  4. Step 4: Simplify right side
    639,468.76x = 311,503,607,726.09
  5. Step 5: Solve for x
    x = 311,503,607,726.09/639,468.76
  6. Step 6: Final answer
    x = 487,128.73

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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.