Home / 813,049.28-1,219,377.84-339,477.92

Finding the Fourth Proportional to 813,049.28, 1,219,377.84 and 339,477.92

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Solution

The fourth proportional to 813,049.28, 1,219,377.84 and 339,477.92 is: 509,135.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,049.28 : 1,219,377.84 = 339,477.92 : x
  2. Step 2: Convert to fraction form
    813,049.28/1,219,377.84 = 339,477.92/x
  3. Step 3: Cross multiply
    813,049.28x = 1,219,377.84 × 339,477.92
  4. Step 4: Simplify right side
    813,049.28x = 413,951,852,817.29
  5. Step 5: Solve for x
    x = 413,951,852,817.29/813,049.28
  6. Step 6: Final answer
    x = 509,135.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.