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Finding the Fourth Proportional to 800,762.97, 1,105,052.86 and 438,186.86

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Solution

The fourth proportional to 800,762.97, 1,105,052.86 and 438,186.86 is: 604,697.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    800,762.97 : 1,105,052.86 = 438,186.86 : x
  2. Step 2: Convert to fraction form
    800,762.97/1,105,052.86 = 438,186.86/x
  3. Step 3: Cross multiply
    800,762.97x = 1,105,052.86 × 438,186.86
  4. Step 4: Simplify right side
    800,762.97x = 484,219,642,857.42
  5. Step 5: Solve for x
    x = 484,219,642,857.42/800,762.97
  6. Step 6: Final answer
    x = 604,697.85

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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.