Home / 828,080.42-1,242,145.23-229,085.72

Finding the Fourth Proportional to 828,080.42, 1,242,145.23 and 229,085.72

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Solution

The fourth proportional to 828,080.42, 1,242,145.23 and 229,085.72 is: 343,635.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,080.42 : 1,242,145.23 = 229,085.72 : x
  2. Step 2: Convert to fraction form
    828,080.42/1,242,145.23 = 229,085.72/x
  3. Step 3: Cross multiply
    828,080.42x = 1,242,145.23 × 229,085.72
  4. Step 4: Simplify right side
    828,080.42x = 284,557,731,947.36
  5. Step 5: Solve for x
    x = 284,557,731,947.36/828,080.42
  6. Step 6: Final answer
    x = 343,635.38

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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.