Home / 639,440.47-882,427.94-352,960.62

Finding the Fourth Proportional to 639,440.47, 882,427.94 and 352,960.62

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Solution

The fourth proportional to 639,440.47, 882,427.94 and 352,960.62 is: 487,085.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,440.47 : 882,427.94 = 352,960.62 : x
  2. Step 2: Convert to fraction form
    639,440.47/882,427.94 = 352,960.62/x
  3. Step 3: Cross multiply
    639,440.47x = 882,427.94 × 352,960.62
  4. Step 4: Simplify right side
    639,440.47x = 311,462,312,807.72
  5. Step 5: Solve for x
    x = 311,462,312,807.72/639,440.47
  6. Step 6: Final answer
    x = 487,085.71

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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.