Home / 724,981.20-1,087,471.80-325,813.20

Finding the Fourth Proportional to 724,981.20, 1,087,471.80 and 325,813.20

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Solution

The fourth proportional to 724,981.20, 1,087,471.80 and 325,813.20 is: 488,719.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,981.20 : 1,087,471.80 = 325,813.20 : x
  2. Step 2: Convert to fraction form
    724,981.20/1,087,471.80 = 325,813.20/x
  3. Step 3: Cross multiply
    724,981.20x = 1,087,471.80 × 325,813.20
  4. Step 4: Simplify right side
    724,981.20x = 354,312,667,067.76
  5. Step 5: Solve for x
    x = 354,312,667,067.76/724,981.20
  6. Step 6: Final answer
    x = 488,719.80

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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.