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Finding the Fourth Proportional to 612,793.29, 845,654.72 and 344,521.29

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Solution

The fourth proportional to 612,793.29, 845,654.72 and 344,521.29 is: 475,439.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,793.29 : 845,654.72 = 344,521.29 : x
  2. Step 2: Convert to fraction form
    612,793.29/845,654.72 = 344,521.29/x
  3. Step 3: Cross multiply
    612,793.29x = 845,654.72 × 344,521.29
  4. Step 4: Simplify right side
    612,793.29x = 291,346,055,028.99
  5. Step 5: Solve for x
    x = 291,346,055,028.99/612,793.29
  6. Step 6: Final answer
    x = 475,439.37

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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.