Home / 821,253.83-1,231,880.76-309,015.32

Finding the Fourth Proportional to 821,253.83, 1,231,880.76 and 309,015.32

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Solution

The fourth proportional to 821,253.83, 1,231,880.76 and 309,015.32 is: 463,522.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,253.83 : 1,231,880.76 = 309,015.32 : x
  2. Step 2: Convert to fraction form
    821,253.83/1,231,880.76 = 309,015.32/x
  3. Step 3: Cross multiply
    821,253.83x = 1,231,880.76 × 309,015.32
  4. Step 4: Simplify right side
    821,253.83x = 380,670,021,093.84
  5. Step 5: Solve for x
    x = 380,670,021,093.84/821,253.83
  6. Step 6: Final answer
    x = 463,522.98

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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.