Home / 916,906.32-1,375,422.66-383,890.68

Finding the Fourth Proportional to 916,906.32, 1,375,422.66 and 383,890.68

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Solution

The fourth proportional to 916,906.32, 1,375,422.66 and 383,890.68 is: 575,862.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    916,906.32 : 1,375,422.66 = 383,890.68 : x
  2. Step 2: Convert to fraction form
    916,906.32/1,375,422.66 = 383,890.68/x
  3. Step 3: Cross multiply
    916,906.32x = 1,375,422.66 × 383,890.68
  4. Step 4: Simplify right side
    916,906.32x = 528,011,940,234.81
  5. Step 5: Solve for x
    x = 528,011,940,234.81/916,906.32
  6. Step 6: Final answer
    x = 575,862.47

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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.