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Finding the Fourth Proportional to 612,544, 845,310.72 and 344,272

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Solution

The fourth proportional to 612,544, 845,310.72 and 344,272 is: 475,095.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,544 : 845,310.72 = 344,272 : x
  2. Step 2: Convert to fraction form
    612,544/845,310.72 = 344,272/x
  3. Step 3: Cross multiply
    612,544x = 845,310.72 × 344,272
  4. Step 4: Simplify right side
    612,544x = 291,016,812,195.84
  5. Step 5: Solve for x
    x = 291,016,812,195.84/612,544
  6. Step 6: Final answer
    x = 475,095.36

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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.