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Finding the Fourth Proportional to 498,343.17, 687,669.43 and 277,563.62

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Solution

The fourth proportional to 498,343.17, 687,669.43 and 277,563.62 is: 383,013.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,343.17 : 687,669.43 = 277,563.62 : x
  2. Step 2: Convert to fraction form
    498,343.17/687,669.43 = 277,563.62/x
  3. Step 3: Cross multiply
    498,343.17x = 687,669.43 × 277,563.62
  4. Step 4: Simplify right side
    498,343.17x = 190,872,016,354.14
  5. Step 5: Solve for x
    x = 190,872,016,354.14/498,343.17
  6. Step 6: Final answer
    x = 383,013.21

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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.