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Finding the Fourth Proportional to 519,028.58, 716,137.17 and 315,074.54

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Solution

The fourth proportional to 519,028.58, 716,137.17 and 315,074.54 is: 434,728.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,028.58 : 716,137.17 = 315,074.54 : x
  2. Step 2: Convert to fraction form
    519,028.58/716,137.17 = 315,074.54/x
  3. Step 3: Cross multiply
    519,028.58x = 716,137.17 × 315,074.54
  4. Step 4: Simplify right side
    519,028.58x = 225,636,589,414.65
  5. Step 5: Solve for x
    x = 225,636,589,414.65/519,028.58
  6. Step 6: Final answer
    x = 434,728.64

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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.