Home / 921,018.92-1,381,528.39-281,296.82

Finding the Fourth Proportional to 921,018.92, 1,381,528.39 and 281,296.82

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Solution

The fourth proportional to 921,018.92, 1,381,528.39 and 281,296.82 is: 421,945.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,018.92 : 1,381,528.39 = 281,296.82 : x
  2. Step 2: Convert to fraction form
    921,018.92/1,381,528.39 = 281,296.82/x
  3. Step 3: Cross multiply
    921,018.92x = 1,381,528.39 × 281,296.82
  4. Step 4: Simplify right side
    921,018.92x = 388,619,538,353.63
  5. Step 5: Solve for x
    x = 388,619,538,353.63/921,018.92
  6. Step 6: Final answer
    x = 421,945.23

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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.