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Finding the Fourth Proportional to 640,462.26, 883,883.67 and 353,976.18

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Solution

The fourth proportional to 640,462.26, 883,883.67 and 353,976.18 is: 488,512.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,462.26 : 883,883.67 = 353,976.18 : x
  2. Step 2: Convert to fraction form
    640,462.26/883,883.67 = 353,976.18/x
  3. Step 3: Cross multiply
    640,462.26x = 883,883.67 × 353,976.18
  4. Step 4: Simplify right side
    640,462.26x = 312,873,765,070.98
  5. Step 5: Solve for x
    x = 312,873,765,070.98/640,462.26
  6. Step 6: Final answer
    x = 488,512.41

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1.5x scale

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.