Home / 828,170.90-1,242,256.35-267,205.40

Finding the Fourth Proportional to 828,170.90, 1,242,256.35 and 267,205.40

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Solution

The fourth proportional to 828,170.90, 1,242,256.35 and 267,205.40 is: 400,808.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,170.90 : 1,242,256.35 = 267,205.40 : x
  2. Step 2: Convert to fraction form
    828,170.90/1,242,256.35 = 267,205.40/x
  3. Step 3: Cross multiply
    828,170.90x = 1,242,256.35 × 267,205.40
  4. Step 4: Simplify right side
    828,170.90x = 331,937,604,904.29
  5. Step 5: Solve for x
    x = 331,937,604,904.29/828,170.90
  6. Step 6: Final answer
    x = 400,808.10

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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.