Home / 813,865.20-1,220,318.28-333,949.92

Finding the Fourth Proportional to 813,865.20, 1,220,318.28 and 333,949.92

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Solution

The fourth proportional to 813,865.20, 1,220,318.28 and 333,949.92 is: 500,728.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,865.20 : 1,220,318.28 = 333,949.92 : x
  2. Step 2: Convert to fraction form
    813,865.20/1,220,318.28 = 333,949.92/x
  3. Step 3: Cross multiply
    813,865.20x = 1,220,318.28 × 333,949.92
  4. Step 4: Simplify right side
    813,865.20x = 407,525,191,980.54
  5. Step 5: Solve for x
    x = 407,525,191,980.54/813,865.20
  6. Step 6: Final answer
    x = 500,728.12

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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.