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Finding the Fourth Proportional to 571,520.36, 857,327.28 and 287,064.64

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Solution

The fourth proportional to 571,520.36, 857,327.28 and 287,064.64 is: 430,620.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,520.36 : 857,327.28 = 287,064.64 : x
  2. Step 2: Convert to fraction form
    571,520.36/857,327.28 = 287,064.64/x
  3. Step 3: Cross multiply
    571,520.36x = 857,327.28 × 287,064.64
  4. Step 4: Simplify right side
    571,520.36x = 246,108,346,995.38
  5. Step 5: Solve for x
    x = 246,108,346,995.38/571,520.36
  6. Step 6: Final answer
    x = 430,620.44

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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.