Home / 780,209.78-1,169,982.35-306,562.88

Finding the Fourth Proportional to 780,209.78, 1,169,982.35 and 306,562.88

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Solution

The fourth proportional to 780,209.78, 1,169,982.35 and 306,562.88 is: 459,713.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,209.78 : 1,169,982.35 = 306,562.88 : x
  2. Step 2: Convert to fraction form
    780,209.78/1,169,982.35 = 306,562.88/x
  3. Step 3: Cross multiply
    780,209.78x = 1,169,982.35 × 306,562.88
  4. Step 4: Simplify right side
    780,209.78x = 358,673,151,382.44
  5. Step 5: Solve for x
    x = 358,673,151,382.44/780,209.78
  6. Step 6: Final answer
    x = 459,713.74

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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.