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Finding the Fourth Proportional to 517,320.46, 713,964.38 and 313,365.39

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Solution

The fourth proportional to 517,320.46, 713,964.38 and 313,365.39 is: 432,481.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,320.46 : 713,964.38 = 313,365.39 : x
  2. Step 2: Convert to fraction form
    517,320.46/713,964.38 = 313,365.39/x
  3. Step 3: Cross multiply
    517,320.46x = 713,964.38 × 313,365.39
  4. Step 4: Simplify right side
    517,320.46x = 223,731,724,817.98
  5. Step 5: Solve for x
    x = 223,731,724,817.98/517,320.46
  6. Step 6: Final answer
    x = 432,481.88

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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.