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Finding the Fourth Proportional to 639,515.32, 882,508.01 and 353,029.25

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Solution

The fourth proportional to 639,515.32, 882,508.01 and 353,029.25 is: 487,167.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,515.32 : 882,508.01 = 353,029.25 : x
  2. Step 2: Convert to fraction form
    639,515.32/882,508.01 = 353,029.25/x
  3. Step 3: Cross multiply
    639,515.32x = 882,508.01 × 353,029.25
  4. Step 4: Simplify right side
    639,515.32x = 311,551,143,316.21
  5. Step 5: Solve for x
    x = 311,551,143,316.21/639,515.32
  6. Step 6: Final answer
    x = 487,167.60

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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.