Home / 849,177.30-1,272,716.19-428,223.54

Finding the Fourth Proportional to 849,177.30, 1,272,716.19 and 428,223.54

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Solution

The fourth proportional to 849,177.30, 1,272,716.19 and 428,223.54 is: 641,805.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    849,177.30 : 1,272,716.19 = 428,223.54 : x
  2. Step 2: Convert to fraction form
    849,177.30/1,272,716.19 = 428,223.54/x
  3. Step 3: Cross multiply
    849,177.30x = 1,272,716.19 × 428,223.54
  4. Step 4: Simplify right side
    849,177.30x = 545,007,032,297.11
  5. Step 5: Solve for x
    x = 545,007,032,297.11/849,177.30
  6. Step 6: Final answer
    x = 641,805.94

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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.