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Finding the Fourth Proportional to 617,640.40, 852,304.17 and 345,662.38

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Solution

The fourth proportional to 617,640.40, 852,304.17 and 345,662.38 is: 476,991.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,640.40 : 852,304.17 = 345,662.38 : x
  2. Step 2: Convert to fraction form
    617,640.40/852,304.17 = 345,662.38/x
  3. Step 3: Cross multiply
    617,640.40x = 852,304.17 × 345,662.38
  4. Step 4: Simplify right side
    617,640.40x = 294,609,487,886.13
  5. Step 5: Solve for x
    x = 294,609,487,886.13/617,640.40
  6. Step 6: Final answer
    x = 476,991.93

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1.5x scale

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.