Home / 763,856.29-1,054,139.39-419,713.75

Finding the Fourth Proportional to 763,856.29, 1,054,139.39 and 419,713.75

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Solution

The fourth proportional to 763,856.29, 1,054,139.39 and 419,713.75 is: 579,214.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,856.29 : 1,054,139.39 = 419,713.75 : x
  2. Step 2: Convert to fraction form
    763,856.29/1,054,139.39 = 419,713.75/x
  3. Step 3: Cross multiply
    763,856.29x = 1,054,139.39 × 419,713.75
  4. Step 4: Simplify right side
    763,856.29x = 442,436,796,399.61
  5. Step 5: Solve for x
    x = 442,436,796,399.61/763,856.29
  6. Step 6: Final answer
    x = 579,214.71

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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.