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Finding the Fourth Proportional to 640,435.32, 883,834.92 and 368,544.60

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Solution

The fourth proportional to 640,435.32, 883,834.92 and 368,544.60 is: 508,611.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,435.32 : 883,834.92 = 368,544.60 : x
  2. Step 2: Convert to fraction form
    640,435.32/883,834.92 = 368,544.60/x
  3. Step 3: Cross multiply
    640,435.32x = 883,834.92 × 368,544.60
  4. Step 4: Simplify right side
    640,435.32x = 325,732,587,057.43
  5. Step 5: Solve for x
    x = 325,732,587,057.43/640,435.32
  6. Step 6: Final answer
    x = 508,611.22

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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.