Home / 827,136.80-1,240,921.20-266,184.80

Finding the Fourth Proportional to 827,136.80, 1,240,921.20 and 266,184.80

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Solution

The fourth proportional to 827,136.80, 1,240,921.20 and 266,184.80 is: 399,346.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    827,136.80 : 1,240,921.20 = 266,184.80 : x
  2. Step 2: Convert to fraction form
    827,136.80/1,240,921.20 = 266,184.80/x
  3. Step 3: Cross multiply
    827,136.80x = 1,240,921.20 × 266,184.80
  4. Step 4: Simplify right side
    827,136.80x = 330,314,361,437.76
  5. Step 5: Solve for x
    x = 330,314,361,437.76/827,136.80
  6. Step 6: Final answer
    x = 399,346.71

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1.5x scale

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.