Home / 828,113.15-1,242,170.17-259,538.55

Finding the Fourth Proportional to 828,113.15, 1,242,170.17 and 259,538.55

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Solution

The fourth proportional to 828,113.15, 1,242,170.17 and 259,538.55 is: 389,307.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,113.15 : 1,242,170.17 = 259,538.55 : x
  2. Step 2: Convert to fraction form
    828,113.15/1,242,170.17 = 259,538.55/x
  3. Step 3: Cross multiply
    828,113.15x = 1,242,170.17 × 259,538.55
  4. Step 4: Simplify right side
    828,113.15x = 322,391,039,468.07
  5. Step 5: Solve for x
    x = 322,391,039,468.07/828,113.15
  6. Step 6: Final answer
    x = 389,307.96

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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.