Home / 827,640.20-1,241,690.70-406,929.80

Finding the Fourth Proportional to 827,640.20, 1,241,690.70 and 406,929.80

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Solution

The fourth proportional to 827,640.20, 1,241,690.70 and 406,929.80 is: 610,507.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    827,640.20 : 1,241,690.70 = 406,929.80 : x
  2. Step 2: Convert to fraction form
    827,640.20/1,241,690.70 = 406,929.80/x
  3. Step 3: Cross multiply
    827,640.20x = 1,241,690.70 × 406,929.80
  4. Step 4: Simplify right side
    827,640.20x = 505,280,948,212.86
  5. Step 5: Solve for x
    x = 505,280,948,212.86/827,640.20
  6. Step 6: Final answer
    x = 610,507.98

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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.