Home / 644,696.86-889,629.60-372,782.36

Finding the Fourth Proportional to 644,696.86, 889,629.60 and 372,782.36

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Solution

The fourth proportional to 644,696.86, 889,629.60 and 372,782.36 is: 514,409.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,696.86 : 889,629.60 = 372,782.36 : x
  2. Step 2: Convert to fraction form
    644,696.86/889,629.60 = 372,782.36/x
  3. Step 3: Cross multiply
    644,696.86x = 889,629.60 × 372,782.36
  4. Step 4: Simplify right side
    644,696.86x = 331,638,221,813.86
  5. Step 5: Solve for x
    x = 331,638,221,813.86/644,696.86
  6. Step 6: Final answer
    x = 514,409.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.