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Finding the Fourth Proportional to 640,833.60, 959,176.80 and 591,067.20

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Solution

The fourth proportional to 640,833.60, 959,176.80 and 591,067.20 is: 884,688.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,833.60 : 959,176.80 = 591,067.20 : x
  2. Step 2: Convert to fraction form
    640,833.60/959,176.80 = 591,067.20/x
  3. Step 3: Cross multiply
    640,833.60x = 959,176.80 × 591,067.20
  4. Step 4: Simplify right side
    640,833.60x = 566,937,945,480.96
  5. Step 5: Solve for x
    x = 566,937,945,480.96/640,833.60
  6. Step 6: Final answer
    x = 884,688.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.