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Finding the Fourth Proportional to 640,711.56, 883,927.64 and 368,633.04

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Solution

The fourth proportional to 640,711.56, 883,927.64 and 368,633.04 is: 508,567.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,711.56 : 883,927.64 = 368,633.04 : x
  2. Step 2: Convert to fraction form
    640,711.56/883,927.64 = 368,633.04/x
  3. Step 3: Cross multiply
    640,711.56x = 883,927.64 × 368,633.04
  4. Step 4: Simplify right side
    640,711.56x = 325,844,933,073.23
  5. Step 5: Solve for x
    x = 325,844,933,073.23/640,711.56
  6. Step 6: Final answer
    x = 508,567.28

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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.