Home / 828,010.80-1,242,016.20-259,439.40

Finding the Fourth Proportional to 828,010.80, 1,242,016.20 and 259,439.40

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Solution

The fourth proportional to 828,010.80, 1,242,016.20 and 259,439.40 is: 389,159.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,010.80 : 1,242,016.20 = 259,439.40 : x
  2. Step 2: Convert to fraction form
    828,010.80/1,242,016.20 = 259,439.40/x
  3. Step 3: Cross multiply
    828,010.80x = 1,242,016.20 × 259,439.40
  4. Step 4: Simplify right side
    828,010.80x = 322,227,937,718.28
  5. Step 5: Solve for x
    x = 322,227,937,718.28/828,010.80
  6. Step 6: Final answer
    x = 389,159.10

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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.