Home / 1,211,380.02-1,817,076.96-312,760.35

Finding the Fourth Proportional to 1,211,380.02, 1,817,076.96 and 312,760.35

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Solution

The fourth proportional to 1,211,380.02, 1,817,076.96 and 312,760.35 is: 469,142.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,380.02 : 1,817,076.96 = 312,760.35 : x
  2. Step 2: Convert to fraction form
    1,211,380.02/1,817,076.96 = 312,760.35/x
  3. Step 3: Cross multiply
    1,211,380.02x = 1,817,076.96 × 312,760.35
  4. Step 4: Simplify right side
    1,211,380.02x = 568,309,625,986.54
  5. Step 5: Solve for x
    x = 568,309,625,986.54/1,211,380.02
  6. Step 6: Final answer
    x = 469,142.31

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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.