Home / 640,629.32-883,991.70-354,110.44

Finding the Fourth Proportional to 640,629.32, 883,991.70 and 354,110.44

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Solution

The fourth proportional to 640,629.32, 883,991.70 and 354,110.44 is: 488,629.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,629.32 : 883,991.70 = 354,110.44 : x
  2. Step 2: Convert to fraction form
    640,629.32/883,991.70 = 354,110.44/x
  3. Step 3: Cross multiply
    640,629.32x = 883,991.70 × 354,110.44
  4. Step 4: Simplify right side
    640,629.32x = 313,030,689,843.35
  5. Step 5: Solve for x
    x = 313,030,689,843.35/640,629.32
  6. Step 6: Final answer
    x = 488,629.98

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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.