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Finding the Fourth Proportional to 800,894.33, 1,105,234.63 and 438,318.01

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Solution

The fourth proportional to 800,894.33, 1,105,234.63 and 438,318.01 is: 604,879.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    800,894.33 : 1,105,234.63 = 438,318.01 : x
  2. Step 2: Convert to fraction form
    800,894.33/1,105,234.63 = 438,318.01/x
  3. Step 3: Cross multiply
    800,894.33x = 1,105,234.63 × 438,318.01
  4. Step 4: Simplify right side
    800,894.33x = 484,444,239,745.81
  5. Step 5: Solve for x
    x = 484,444,239,745.81/800,894.33
  6. Step 6: Final answer
    x = 604,879.10

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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.