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Finding the Fourth Proportional to 639,480.88, 882,483.78 and 353,001.16

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Solution

The fourth proportional to 639,480.88, 882,483.78 and 353,001.16 is: 487,141.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,480.88 : 882,483.78 = 353,001.16 : x
  2. Step 2: Convert to fraction form
    639,480.88/882,483.78 = 353,001.16/x
  3. Step 3: Cross multiply
    639,480.88x = 882,483.78 × 353,001.16
  4. Step 4: Simplify right side
    639,480.88x = 311,517,798,021.19
  5. Step 5: Solve for x
    x = 311,517,798,021.19/639,480.88
  6. Step 6: Final answer
    x = 487,141.69

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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.