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Finding the Fourth Proportional to 576,836.38, 796,029.50 and 318,712.50

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Solution

The fourth proportional to 576,836.38, 796,029.50 and 318,712.50 is: 439,820.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,836.38 : 796,029.50 = 318,712.50 : x
  2. Step 2: Convert to fraction form
    576,836.38/796,029.50 = 318,712.50/x
  3. Step 3: Cross multiply
    576,836.38x = 796,029.50 × 318,712.50
  4. Step 4: Simplify right side
    576,836.38x = 253,704,552,018.75
  5. Step 5: Solve for x
    x = 253,704,552,018.75/576,836.38
  6. Step 6: Final answer
    x = 439,820.65

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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.