Home / 827,154.20-1,240,961.70-406,443.80

Finding the Fourth Proportional to 827,154.20, 1,240,961.70 and 406,443.80

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Solution

The fourth proportional to 827,154.20, 1,240,961.70 and 406,443.80 is: 609,778.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    827,154.20 : 1,240,961.70 = 406,443.80 : x
  2. Step 2: Convert to fraction form
    827,154.20/1,240,961.70 = 406,443.80/x
  3. Step 3: Cross multiply
    827,154.20x = 1,240,961.70 × 406,443.80
  4. Step 4: Simplify right side
    827,154.20x = 504,381,189,002.46
  5. Step 5: Solve for x
    x = 504,381,189,002.46/827,154.20
  6. Step 6: Final answer
    x = 609,778.91

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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.