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Finding the Fourth Proportional to 519,630.66, 717,042.78 and 304,731.18

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Solution

The fourth proportional to 519,630.66, 717,042.78 and 304,731.18 is: 420,501.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,630.66 : 717,042.78 = 304,731.18 : x
  2. Step 2: Convert to fraction form
    519,630.66/717,042.78 = 304,731.18/x
  3. Step 3: Cross multiply
    519,630.66x = 717,042.78 × 304,731.18
  4. Step 4: Simplify right side
    519,630.66x = 218,505,292,459.88
  5. Step 5: Solve for x
    x = 218,505,292,459.88/519,630.66
  6. Step 6: Final answer
    x = 420,501.15

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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.