Home / 800,821.16-1,105,133.25-438,245.06

Finding the Fourth Proportional to 800,821.16, 1,105,133.25 and 438,245.06

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Solution

The fourth proportional to 800,821.16, 1,105,133.25 and 438,245.06 is: 604,778.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    800,821.16 : 1,105,133.25 = 438,245.06 : x
  2. Step 2: Convert to fraction form
    800,821.16/1,105,133.25 = 438,245.06/x
  3. Step 3: Cross multiply
    800,821.16x = 1,105,133.25 × 438,245.06
  4. Step 4: Simplify right side
    800,821.16x = 484,319,187,454.25
  5. Step 5: Solve for x
    x = 484,319,187,454.25/800,821.16
  6. Step 6: Final answer
    x = 604,778.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.