Home / 828,087.80-1,241,245.82-428,326.12

Finding the Fourth Proportional to 828,087.80, 1,241,245.82 and 428,326.12

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Solution

The fourth proportional to 828,087.80, 1,241,245.82 and 428,326.12 is: 642,030.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,087.80 : 1,241,245.82 = 428,326.12 : x
  2. Step 2: Convert to fraction form
    828,087.80/1,241,245.82 = 428,326.12/x
  3. Step 3: Cross multiply
    828,087.80x = 1,241,245.82 × 428,326.12
  4. Step 4: Simplify right side
    828,087.80x = 531,658,006,046.82
  5. Step 5: Solve for x
    x = 531,658,006,046.82/828,087.80
  6. Step 6: Final answer
    x = 642,030.96

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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.