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Finding the Fourth Proportional to 516,526.87, 713,007.57 and 387,836.95

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Solution

The fourth proportional to 516,526.87, 713,007.57 and 387,836.95 is: 535,365.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,526.87 : 713,007.57 = 387,836.95 : x
  2. Step 2: Convert to fraction form
    516,526.87/713,007.57 = 387,836.95/x
  3. Step 3: Cross multiply
    516,526.87x = 713,007.57 × 387,836.95
  4. Step 4: Simplify right side
    516,526.87x = 276,530,682,049.47
  5. Step 5: Solve for x
    x = 276,530,682,049.47/516,526.87
  6. Step 6: Final answer
    x = 535,365.53

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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.