Home / 825,715.20-1,238,803.20-405,004.80

Finding the Fourth Proportional to 825,715.20, 1,238,803.20 and 405,004.80

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Solution

The fourth proportional to 825,715.20, 1,238,803.20 and 405,004.80 is: 607,620.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    825,715.20 : 1,238,803.20 = 405,004.80 : x
  2. Step 2: Convert to fraction form
    825,715.20/1,238,803.20 = 405,004.80/x
  3. Step 3: Cross multiply
    825,715.20x = 1,238,803.20 × 405,004.80
  4. Step 4: Simplify right side
    825,715.20x = 501,721,242,255.36
  5. Step 5: Solve for x
    x = 501,721,242,255.36/825,715.20
  6. Step 6: Final answer
    x = 607,620.21

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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.