Home / 827,219.70-1,240,829.55-661,331.70

Finding the Fourth Proportional to 827,219.70, 1,240,829.55 and 661,331.70

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Solution

The fourth proportional to 827,219.70, 1,240,829.55 and 661,331.70 is: 991,997.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    827,219.70 : 1,240,829.55 = 661,331.70 : x
  2. Step 2: Convert to fraction form
    827,219.70/1,240,829.55 = 661,331.70/x
  3. Step 3: Cross multiply
    827,219.70x = 1,240,829.55 × 661,331.70
  4. Step 4: Simplify right side
    827,219.70x = 820,599,915,711.74
  5. Step 5: Solve for x
    x = 820,599,915,711.74/827,219.70
  6. Step 6: Final answer
    x = 991,997.55

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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.