Home / 639,421.31-882,401.46-352,941.47

Finding the Fourth Proportional to 639,421.31, 882,401.46 and 352,941.47

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Solution

The fourth proportional to 639,421.31, 882,401.46 and 352,941.47 is: 487,059.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,421.31 : 882,401.46 = 352,941.47 : x
  2. Step 2: Convert to fraction form
    639,421.31/882,401.46 = 352,941.47/x
  3. Step 3: Cross multiply
    639,421.31x = 882,401.46 × 352,941.47
  4. Step 4: Simplify right side
    639,421.31x = 311,436,068,422.55
  5. Step 5: Solve for x
    x = 311,436,068,422.55/639,421.31
  6. Step 6: Final answer
    x = 487,059.26

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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.