Home / 825,711.84-1,238,270.49-285,821.40

Finding the Fourth Proportional to 825,711.84, 1,238,270.49 and 285,821.40

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Solution

The fourth proportional to 825,711.84, 1,238,270.49 and 285,821.40 is: 428,629.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    825,711.84 : 1,238,270.49 = 285,821.40 : x
  2. Step 2: Convert to fraction form
    825,711.84/1,238,270.49 = 285,821.40/x
  3. Step 3: Cross multiply
    825,711.84x = 1,238,270.49 × 285,821.40
  4. Step 4: Simplify right side
    825,711.84x = 353,924,205,030.49
  5. Step 5: Solve for x
    x = 353,924,205,030.49/825,711.84
  6. Step 6: Final answer
    x = 428,629.20

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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.