Home / 687,513.03-948,760.77-381,592.05

Finding the Fourth Proportional to 687,513.03, 948,760.77 and 381,592.05

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Solution

The fourth proportional to 687,513.03, 948,760.77 and 381,592.05 is: 526,593.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,513.03 : 948,760.77 = 381,592.05 : x
  2. Step 2: Convert to fraction form
    687,513.03/948,760.77 = 381,592.05/x
  3. Step 3: Cross multiply
    687,513.03x = 948,760.77 × 381,592.05
  4. Step 4: Simplify right side
    687,513.03x = 362,039,567,183.88
  5. Step 5: Solve for x
    x = 362,039,567,183.88/687,513.03
  6. Step 6: Final answer
    x = 526,593.03

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.