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Finding the Fourth Proportional to 639,841, 882,980.58 and 371,586.28

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Solution

The fourth proportional to 639,841, 882,980.58 and 371,586.28 is: 512,789.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,841 : 882,980.58 = 371,586.28 : x
  2. Step 2: Convert to fraction form
    639,841/882,980.58 = 371,586.28/x
  3. Step 3: Cross multiply
    639,841x = 882,980.58 × 371,586.28
  4. Step 4: Simplify right side
    639,841x = 328,103,469,034.44
  5. Step 5: Solve for x
    x = 328,103,469,034.44/639,841
  6. Step 6: Final answer
    x = 512,789.07

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1.5x scale

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.