Home / 639,421.47-882,401.72-352,941.66

Finding the Fourth Proportional to 639,421.47, 882,401.72 and 352,941.66

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Solution

The fourth proportional to 639,421.47, 882,401.72 and 352,941.66 is: 487,059.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,421.47 : 882,401.72 = 352,941.66 : x
  2. Step 2: Convert to fraction form
    639,421.47/882,401.72 = 352,941.66/x
  3. Step 3: Cross multiply
    639,421.47x = 882,401.72 × 352,941.66
  4. Step 4: Simplify right side
    639,421.47x = 311,436,326,078.95
  5. Step 5: Solve for x
    x = 311,436,326,078.95/639,421.47
  6. Step 6: Final answer
    x = 487,059.54

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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.