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Finding the Fourth Proportional to 640,695.06, 884,177.64 and 354,233.64

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Solution

The fourth proportional to 640,695.06, 884,177.64 and 354,233.64 is: 488,852.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,695.06 : 884,177.64 = 354,233.64 : x
  2. Step 2: Convert to fraction form
    640,695.06/884,177.64 = 354,233.64/x
  3. Step 3: Cross multiply
    640,695.06x = 884,177.64 × 354,233.64
  4. Step 4: Simplify right side
    640,695.06x = 313,205,463,823.81
  5. Step 5: Solve for x
    x = 313,205,463,823.81/640,695.06
  6. Step 6: Final answer
    x = 488,852.63

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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.