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Finding the Fourth Proportional to 571,513.35, 857,316.78 and 287,057.64

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Solution

The fourth proportional to 571,513.35, 857,316.78 and 287,057.64 is: 430,609.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,513.35 : 857,316.78 = 287,057.64 : x
  2. Step 2: Convert to fraction form
    571,513.35/857,316.78 = 287,057.64/x
  3. Step 3: Cross multiply
    571,513.35x = 857,316.78 × 287,057.64
  4. Step 4: Simplify right side
    571,513.35x = 246,099,331,599.20
  5. Step 5: Solve for x
    x = 246,099,331,599.20/571,513.35
  6. Step 6: Final answer
    x = 430,609.94

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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.