Home / 1,256,665.20-1,885,129.02-724,786.80

Finding the Fourth Proportional to 1,256,665.20, 1,885,129.02 and 724,786.80

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Solution

The fourth proportional to 1,256,665.20, 1,885,129.02 and 724,786.80 is: 1,087,255.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,256,665.20 : 1,885,129.02 = 724,786.80 : x
  2. Step 2: Convert to fraction form
    1,256,665.20/1,885,129.02 = 724,786.80/x
  3. Step 3: Cross multiply
    1,256,665.20x = 1,885,129.02 × 724,786.80
  4. Step 4: Simplify right side
    1,256,665.20x = 1,366,316,629,992.94
  5. Step 5: Solve for x
    x = 1,366,316,629,992.94/1,256,665.20
  6. Step 6: Final answer
    x = 1,087,255.88

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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.