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Finding the Fourth Proportional to 639,691.50, 882,852.03 and 371,419.50

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Solution

The fourth proportional to 639,691.50, 882,852.03 and 371,419.50 is: 512,604.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,691.50 : 882,852.03 = 371,419.50 : x
  2. Step 2: Convert to fraction form
    639,691.50/882,852.03 = 371,419.50/x
  3. Step 3: Cross multiply
    639,691.50x = 882,852.03 × 371,419.50
  4. Step 4: Simplify right side
    639,691.50x = 327,908,459,556.59
  5. Step 5: Solve for x
    x = 327,908,459,556.59/639,691.50
  6. Step 6: Final answer
    x = 512,604.06

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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.