Home / 828,847.40-1,243,271.10-355,452.20

Finding the Fourth Proportional to 828,847.40, 1,243,271.10 and 355,452.20

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Solution

The fourth proportional to 828,847.40, 1,243,271.10 and 355,452.20 is: 533,178.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,847.40 : 1,243,271.10 = 355,452.20 : x
  2. Step 2: Convert to fraction form
    828,847.40/1,243,271.10 = 355,452.20/x
  3. Step 3: Cross multiply
    828,847.40x = 1,243,271.10 × 355,452.20
  4. Step 4: Simplify right side
    828,847.40x = 441,923,447,691.42
  5. Step 5: Solve for x
    x = 441,923,447,691.42/828,847.40
  6. Step 6: Final answer
    x = 533,178.30

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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.