Home / 1,147,941.48-1,721,855.26-428,227.12

Finding the Fourth Proportional to 1,147,941.48, 1,721,855.26 and 428,227.12

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Solution

The fourth proportional to 1,147,941.48, 1,721,855.26 and 428,227.12 is: 642,319.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,147,941.48 : 1,721,855.26 = 428,227.12 : x
  2. Step 2: Convert to fraction form
    1,147,941.48/1,721,855.26 = 428,227.12/x
  3. Step 3: Cross multiply
    1,147,941.48x = 1,721,855.26 × 428,227.12
  4. Step 4: Simplify right side
    1,147,941.48x = 737,345,119,046.65
  5. Step 5: Solve for x
    x = 737,345,119,046.65/1,147,941.48
  6. Step 6: Final answer
    x = 642,319.43

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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.