Home / 639,424.47-882,405.86-352,944.66

Finding the Fourth Proportional to 639,424.47, 882,405.86 and 352,944.66

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Solution

The fourth proportional to 639,424.47, 882,405.86 and 352,944.66 is: 487,063.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,424.47 : 882,405.86 = 352,944.66 : x
  2. Step 2: Convert to fraction form
    639,424.47/882,405.86 = 352,944.66/x
  3. Step 3: Cross multiply
    639,424.47x = 882,405.86 × 352,944.66
  4. Step 4: Simplify right side
    639,424.47x = 311,440,434,474.98
  5. Step 5: Solve for x
    x = 311,440,434,474.98/639,424.47
  6. Step 6: Final answer
    x = 487,063.68

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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.