Home / 921,009.30-1,381,724.22-281,404.07

Finding the Fourth Proportional to 921,009.30, 1,381,724.22 and 281,404.07

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Solution

The fourth proportional to 921,009.30, 1,381,724.22 and 281,404.07 is: 422,170.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,009.30 : 1,381,724.22 = 281,404.07 : x
  2. Step 2: Convert to fraction form
    921,009.30/1,381,724.22 = 281,404.07/x
  3. Step 3: Cross multiply
    921,009.30x = 1,381,724.22 × 281,404.07
  4. Step 4: Simplify right side
    921,009.30x = 388,822,812,216.95
  5. Step 5: Solve for x
    x = 388,822,812,216.95/921,009.30
  6. Step 6: Final answer
    x = 422,170.34

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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.