Home / 772,004.80-1,158,007.20-211,039.30

Finding the Fourth Proportional to 772,004.80, 1,158,007.20 and 211,039.30

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Solution

The fourth proportional to 772,004.80, 1,158,007.20 and 211,039.30 is: 316,558.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,004.80 : 1,158,007.20 = 211,039.30 : x
  2. Step 2: Convert to fraction form
    772,004.80/1,158,007.20 = 211,039.30/x
  3. Step 3: Cross multiply
    772,004.80x = 1,158,007.20 × 211,039.30
  4. Step 4: Simplify right side
    772,004.80x = 244,385,028,882.96
  5. Step 5: Solve for x
    x = 244,385,028,882.96/772,004.80
  6. Step 6: Final answer
    x = 316,558.95

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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.