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Finding the Fourth Proportional to 707,831.12, 1,062,183 and 287,110.64

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Solution

The fourth proportional to 707,831.12, 1,062,183 and 287,110.64 is: 430,842.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,831.12 : 1,062,183 = 287,110.64 : x
  2. Step 2: Convert to fraction form
    707,831.12/1,062,183 = 287,110.64/x
  3. Step 3: Cross multiply
    707,831.12x = 1,062,183 × 287,110.64
  4. Step 4: Simplify right side
    707,831.12x = 304,964,040,927.12
  5. Step 5: Solve for x
    x = 304,964,040,927.12/707,831.12
  6. Step 6: Final answer
    x = 430,842.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.