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Finding the Fourth Proportional to 617,683.24, 852,411.57 and 355,893.88

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Solution

The fourth proportional to 617,683.24, 852,411.57 and 355,893.88 is: 491,138.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,683.24 : 852,411.57 = 355,893.88 : x
  2. Step 2: Convert to fraction form
    617,683.24/852,411.57 = 355,893.88/x
  3. Step 3: Cross multiply
    617,683.24x = 852,411.57 × 355,893.88
  4. Step 4: Simplify right side
    617,683.24x = 303,368,061,004.19
  5. Step 5: Solve for x
    x = 303,368,061,004.19/617,683.24
  6. Step 6: Final answer
    x = 491,138.57

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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.