Home / 821,252.34-1,231,878.51-309,013.80

Finding the Fourth Proportional to 821,252.34, 1,231,878.51 and 309,013.80

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Solution

The fourth proportional to 821,252.34, 1,231,878.51 and 309,013.80 is: 463,520.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,252.34 : 1,231,878.51 = 309,013.80 : x
  2. Step 2: Convert to fraction form
    821,252.34/1,231,878.51 = 309,013.80/x
  3. Step 3: Cross multiply
    821,252.34x = 1,231,878.51 × 309,013.80
  4. Step 4: Simplify right side
    821,252.34x = 380,667,459,513.44
  5. Step 5: Solve for x
    x = 380,667,459,513.44/821,252.34
  6. Step 6: Final answer
    x = 463,520.70

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Similar ratio
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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.