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Finding the Fourth Proportional to 622,558.16, 859,133.80 and 354,286.16

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Solution

The fourth proportional to 622,558.16, 859,133.80 and 354,286.16 is: 488,916.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,558.16 : 859,133.80 = 354,286.16 : x
  2. Step 2: Convert to fraction form
    622,558.16/859,133.80 = 354,286.16/x
  3. Step 3: Cross multiply
    622,558.16x = 859,133.80 × 354,286.16
  4. Step 4: Simplify right side
    622,558.16x = 304,379,214,928.21
  5. Step 5: Solve for x
    x = 304,379,214,928.21/622,558.16
  6. Step 6: Final answer
    x = 488,916.91

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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.