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Finding the Fourth Proportional to 519,337, 716,685.06 and 280,873

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Solution

The fourth proportional to 519,337, 716,685.06 and 280,873 is: 387,604.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,337 : 716,685.06 = 280,873 : x
  2. Step 2: Convert to fraction form
    519,337/716,685.06 = 280,873/x
  3. Step 3: Cross multiply
    519,337x = 716,685.06 × 280,873
  4. Step 4: Simplify right side
    519,337x = 201,297,482,857.38
  5. Step 5: Solve for x
    x = 201,297,482,857.38/519,337
  6. Step 6: Final answer
    x = 387,604.74

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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.