Home / 828,096.55-1,242,143.30-259,521.20

Finding the Fourth Proportional to 828,096.55, 1,242,143.30 and 259,521.20

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Solution

The fourth proportional to 828,096.55, 1,242,143.30 and 259,521.20 is: 389,281.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,096.55 : 1,242,143.30 = 259,521.20 : x
  2. Step 2: Convert to fraction form
    828,096.55/1,242,143.30 = 259,521.20/x
  3. Step 3: Cross multiply
    828,096.55x = 1,242,143.30 × 259,521.20
  4. Step 4: Simplify right side
    828,096.55x = 322,362,518,884.08
  5. Step 5: Solve for x
    x = 322,362,518,884.08/828,096.55
  6. Step 6: Final answer
    x = 389,281.32

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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.