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Finding the Fourth Proportional to 517,814.73, 714,500.87 and 326,931.21

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Solution

The fourth proportional to 517,814.73, 714,500.87 and 326,931.21 is: 451,112.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,814.73 : 714,500.87 = 326,931.21 : x
  2. Step 2: Convert to fraction form
    517,814.73/714,500.87 = 326,931.21/x
  3. Step 3: Cross multiply
    517,814.73x = 714,500.87 × 326,931.21
  4. Step 4: Simplify right side
    517,814.73x = 233,592,632,340.50
  5. Step 5: Solve for x
    x = 233,592,632,340.50/517,814.73
  6. Step 6: Final answer
    x = 451,112.37

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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.