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Finding the Fourth Proportional to 647,412.62, 893,145.92 and 617,396.04

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Solution

The fourth proportional to 647,412.62, 893,145.92 and 617,396.04 is: 851,736.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,412.62 : 893,145.92 = 617,396.04 : x
  2. Step 2: Convert to fraction form
    647,412.62/893,145.92 = 617,396.04/x
  3. Step 3: Cross multiply
    647,412.62x = 893,145.92 × 617,396.04
  4. Step 4: Simplify right side
    647,412.62x = 551,424,751,063.18
  5. Step 5: Solve for x
    x = 551,424,751,063.18/647,412.62
  6. Step 6: Final answer
    x = 851,736.19

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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.