Home / 644,515.29-889,456.32-440,993.07

Finding the Fourth Proportional to 644,515.29, 889,456.32 and 440,993.07

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Solution

The fourth proportional to 644,515.29, 889,456.32 and 440,993.07 is: 608,587.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,515.29 : 889,456.32 = 440,993.07 : x
  2. Step 2: Convert to fraction form
    644,515.29/889,456.32 = 440,993.07/x
  3. Step 3: Cross multiply
    644,515.29x = 889,456.32 × 440,993.07
  4. Step 4: Simplify right side
    644,515.29x = 392,244,073,187.70
  5. Step 5: Solve for x
    x = 392,244,073,187.70/644,515.29
  6. Step 6: Final answer
    x = 608,587.69

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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.