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Finding the Fourth Proportional to 516,382.36, 712,674.56 and 290,027.88

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Solution

The fourth proportional to 516,382.36, 712,674.56 and 290,027.88 is: 400,276.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,382.36 : 712,674.56 = 290,027.88 : x
  2. Step 2: Convert to fraction form
    516,382.36/712,674.56 = 290,027.88/x
  3. Step 3: Cross multiply
    516,382.36x = 712,674.56 × 290,027.88
  4. Step 4: Simplify right side
    516,382.36x = 206,695,491,766.73
  5. Step 5: Solve for x
    x = 206,695,491,766.73/516,382.36
  6. Step 6: Final answer
    x = 400,276.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.