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Finding the Fourth Proportional to 800,820.16, 1,105,131.87 and 438,244.06

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Solution

The fourth proportional to 800,820.16, 1,105,131.87 and 438,244.06 is: 604,776.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    800,820.16 : 1,105,131.87 = 438,244.06 : x
  2. Step 2: Convert to fraction form
    800,820.16/1,105,131.87 = 438,244.06/x
  3. Step 3: Cross multiply
    800,820.16x = 1,105,131.87 × 438,244.06
  4. Step 4: Simplify right side
    800,820.16x = 484,317,477,544.19
  5. Step 5: Solve for x
    x = 484,317,477,544.19/800,820.16
  6. Step 6: Final answer
    x = 604,776.83

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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.