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Finding the Fourth Proportional to 571,516.35, 857,321.28 and 287,060.64

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Solution

The fourth proportional to 571,516.35, 857,321.28 and 287,060.64 is: 430,614.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,516.35 : 857,321.28 = 287,060.64 : x
  2. Step 2: Convert to fraction form
    571,516.35/857,321.28 = 287,060.64/x
  3. Step 3: Cross multiply
    571,516.35x = 857,321.28 × 287,060.64
  4. Step 4: Simplify right side
    571,516.35x = 246,103,195,322.42
  5. Step 5: Solve for x
    x = 246,103,195,322.42/571,516.35
  6. Step 6: Final answer
    x = 430,614.44

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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.