Home / 981,990.12-1,473,131.04-308,126.88

Finding the Fourth Proportional to 981,990.12, 1,473,131.04 and 308,126.88

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Solution

The fourth proportional to 981,990.12, 1,473,131.04 and 308,126.88 is: 462,236.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    981,990.12 : 1,473,131.04 = 308,126.88 : x
  2. Step 2: Convert to fraction form
    981,990.12/1,473,131.04 = 308,126.88/x
  3. Step 3: Cross multiply
    981,990.12x = 1,473,131.04 × 308,126.88
  4. Step 4: Simplify right side
    981,990.12x = 453,911,271,186.36
  5. Step 5: Solve for x
    x = 453,911,271,186.36/981,990.12
  6. Step 6: Final answer
    x = 462,236.09

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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.