Home / 827,140.20-1,240,940.70-406,429.80

Finding the Fourth Proportional to 827,140.20, 1,240,940.70 and 406,429.80

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Solution

The fourth proportional to 827,140.20, 1,240,940.70 and 406,429.80 is: 609,757.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    827,140.20 : 1,240,940.70 = 406,429.80 : x
  2. Step 2: Convert to fraction form
    827,140.20/1,240,940.70 = 406,429.80/x
  3. Step 3: Cross multiply
    827,140.20x = 1,240,940.70 × 406,429.80
  4. Step 4: Simplify right side
    827,140.20x = 504,355,280,512.86
  5. Step 5: Solve for x
    x = 504,355,280,512.86/827,140.20
  6. Step 6: Final answer
    x = 609,757.91

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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.