Home / 800,786.21-1,105,084.85-438,210.11

Finding the Fourth Proportional to 800,786.21, 1,105,084.85 and 438,210.11

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Solution

The fourth proportional to 800,786.21, 1,105,084.85 and 438,210.11 is: 604,729.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    800,786.21 : 1,105,084.85 = 438,210.11 : x
  2. Step 2: Convert to fraction form
    800,786.21/1,105,084.85 = 438,210.11/x
  3. Step 3: Cross multiply
    800,786.21x = 1,105,084.85 × 438,210.11
  4. Step 4: Simplify right side
    800,786.21x = 484,259,354,249.50
  5. Step 5: Solve for x
    x = 484,259,354,249.50/800,786.21
  6. Step 6: Final answer
    x = 604,729.89

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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.