Home / 825,711.17-1,238,269.62-285,820.76

Finding the Fourth Proportional to 825,711.17, 1,238,269.62 and 285,820.76

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Solution

The fourth proportional to 825,711.17, 1,238,269.62 and 285,820.76 is: 428,628.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    825,711.17 : 1,238,269.62 = 285,820.76 : x
  2. Step 2: Convert to fraction form
    825,711.17/1,238,269.62 = 285,820.76/x
  3. Step 3: Cross multiply
    825,711.17x = 1,238,269.62 × 285,820.76
  4. Step 4: Simplify right side
    825,711.17x = 353,923,162,548.49
  5. Step 5: Solve for x
    x = 353,923,162,548.49/825,711.17
  6. Step 6: Final answer
    x = 428,628.28

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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.