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Finding the Fourth Proportional to 617,090.62, 851,663.94 and 345,173.62

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Solution

The fourth proportional to 617,090.62, 851,663.94 and 345,173.62 is: 476,383.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,090.62 : 851,663.94 = 345,173.62 : x
  2. Step 2: Convert to fraction form
    617,090.62/851,663.94 = 345,173.62/x
  3. Step 3: Cross multiply
    617,090.62x = 851,663.94 × 345,173.62
  4. Step 4: Simplify right side
    617,090.62x = 293,971,925,193.26
  5. Step 5: Solve for x
    x = 293,971,925,193.26/617,090.62
  6. Step 6: Final answer
    x = 476,383.72

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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.