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Finding the Fourth Proportional to 638,772.80, 957,813.60 and 264,833.60

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Solution

The fourth proportional to 638,772.80, 957,813.60 and 264,833.60 is: 397,107.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,772.80 : 957,813.60 = 264,833.60 : x
  2. Step 2: Convert to fraction form
    638,772.80/957,813.60 = 264,833.60/x
  3. Step 3: Cross multiply
    638,772.80x = 957,813.60 × 264,833.60
  4. Step 4: Simplify right side
    638,772.80x = 253,661,223,816.96
  5. Step 5: Solve for x
    x = 253,661,223,816.96/638,772.80
  6. Step 6: Final answer
    x = 397,107.12

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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.