Home / 918,601.54-1,378,067.54-378,557.12

Finding the Fourth Proportional to 918,601.54, 1,378,067.54 and 378,557.12

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Solution

The fourth proportional to 918,601.54, 1,378,067.54 and 378,557.12 is: 567,903.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,601.54 : 1,378,067.54 = 378,557.12 : x
  2. Step 2: Convert to fraction form
    918,601.54/1,378,067.54 = 378,557.12/x
  3. Step 3: Cross multiply
    918,601.54x = 1,378,067.54 × 378,557.12
  4. Step 4: Simplify right side
    918,601.54x = 521,677,279,107.89
  5. Step 5: Solve for x
    x = 521,677,279,107.89/918,601.54
  6. Step 6: Final answer
    x = 567,903.77

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.