Home / 999,286.21-1,378,627.72-636,645.16

Finding the Fourth Proportional to 999,286.21, 1,378,627.72 and 636,645.16

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Solution

The fourth proportional to 999,286.21, 1,378,627.72 and 636,645.16 is: 878,323.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,286.21 : 1,378,627.72 = 636,645.16 : x
  2. Step 2: Convert to fraction form
    999,286.21/1,378,627.72 = 636,645.16/x
  3. Step 3: Cross multiply
    999,286.21x = 1,378,627.72 × 636,645.16
  4. Step 4: Simplify right side
    999,286.21x = 877,696,665,379.84
  5. Step 5: Solve for x
    x = 877,696,665,379.84/999,286.21
  6. Step 6: Final answer
    x = 878,323.60

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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.