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Finding the Fourth Proportional to 617,119.23, 851,703.31 and 345,202.23

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Solution

The fourth proportional to 617,119.23, 851,703.31 and 345,202.23 is: 476,423.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,119.23 : 851,703.31 = 345,202.23 : x
  2. Step 2: Convert to fraction form
    617,119.23/851,703.31 = 345,202.23/x
  3. Step 3: Cross multiply
    617,119.23x = 851,703.31 × 345,202.23
  4. Step 4: Simplify right side
    617,119.23x = 294,009,881,910.38
  5. Step 5: Solve for x
    x = 294,009,881,910.38/617,119.23
  6. Step 6: Final answer
    x = 476,423.14

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Double scale
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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.