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Finding the Fourth Proportional to 617,653.25, 852,240.32 and 388,077.54

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Solution

The fourth proportional to 617,653.25, 852,240.32 and 388,077.54 is: 535,470.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,653.25 : 852,240.32 = 388,077.54 : x
  2. Step 2: Convert to fraction form
    617,653.25/852,240.32 = 388,077.54/x
  3. Step 3: Cross multiply
    617,653.25x = 852,240.32 × 388,077.54
  4. Step 4: Simplify right side
    617,653.25x = 330,735,325,376.35
  5. Step 5: Solve for x
    x = 330,735,325,376.35/617,653.25
  6. Step 6: Final answer
    x = 535,470.87

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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.