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Finding the Fourth Proportional to 578,618.20, 798,083.58 and 497,906.56

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Solution

The fourth proportional to 578,618.20, 798,083.58 and 497,906.56 is: 686,758.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,618.20 : 798,083.58 = 497,906.56 : x
  2. Step 2: Convert to fraction form
    578,618.20/798,083.58 = 497,906.56/x
  3. Step 3: Cross multiply
    578,618.20x = 798,083.58 × 497,906.56
  4. Step 4: Simplify right side
    578,618.20x = 397,371,049,910.29
  5. Step 5: Solve for x
    x = 397,371,049,910.29/578,618.20
  6. Step 6: Final answer
    x = 686,758.64

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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.