Home / 644,729.24-889,746.39-354,335.54

Finding the Fourth Proportional to 644,729.24, 889,746.39 and 354,335.54

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Solution

The fourth proportional to 644,729.24, 889,746.39 and 354,335.54 is: 488,994.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,729.24 : 889,746.39 = 354,335.54 : x
  2. Step 2: Convert to fraction form
    644,729.24/889,746.39 = 354,335.54/x
  3. Step 3: Cross multiply
    644,729.24x = 889,746.39 × 354,335.54
  4. Step 4: Simplify right side
    644,729.24x = 315,268,767,563.70
  5. Step 5: Solve for x
    x = 315,268,767,563.70/644,729.24
  6. Step 6: Final answer
    x = 488,994.06

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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.