Home / 664,569.30-917,093.79-378,083.19

Finding the Fourth Proportional to 664,569.30, 917,093.79 and 378,083.19

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Solution

The fourth proportional to 664,569.30, 917,093.79 and 378,083.19 is: 521,748.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,569.30 : 917,093.79 = 378,083.19 : x
  2. Step 2: Convert to fraction form
    664,569.30/917,093.79 = 378,083.19/x
  3. Step 3: Cross multiply
    664,569.30x = 917,093.79 × 378,083.19
  4. Step 4: Simplify right side
    664,569.30x = 346,737,745,652.39
  5. Step 5: Solve for x
    x = 346,737,745,652.39/664,569.30
  6. Step 6: Final answer
    x = 521,748.06

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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.