Home / 644,938.80-889,675.56-383,144.64

Finding the Fourth Proportional to 644,938.80, 889,675.56 and 383,144.64

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Solution

The fourth proportional to 644,938.80, 889,675.56 and 383,144.64 is: 528,537.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,938.80 : 889,675.56 = 383,144.64 : x
  2. Step 2: Convert to fraction form
    644,938.80/889,675.56 = 383,144.64/x
  3. Step 3: Cross multiply
    644,938.80x = 889,675.56 × 383,144.64
  4. Step 4: Simplify right side
    644,938.80x = 340,874,422,153.00
  5. Step 5: Solve for x
    x = 340,874,422,153.00/644,938.80
  6. Step 6: Final answer
    x = 528,537.63

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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.