Home / 517,318.20-713,836.44-287,821.31

Finding the Fourth Proportional to 517,318.20, 713,836.44 and 287,821.31

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Solution

The fourth proportional to 517,318.20, 713,836.44 and 287,821.31 is: 397,158.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,318.20 : 713,836.44 = 287,821.31 : x
  2. Step 2: Convert to fraction form
    517,318.20/713,836.44 = 287,821.31/x
  3. Step 3: Cross multiply
    517,318.20x = 713,836.44 × 287,821.31
  4. Step 4: Simplify right side
    517,318.20x = 205,457,335,717.35
  5. Step 5: Solve for x
    x = 205,457,335,717.35/517,318.20
  6. Step 6: Final answer
    x = 397,158.53

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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.