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Finding the Fourth Proportional to 640,952.70, 884,416.44 and 368,968.02

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Solution

The fourth proportional to 640,952.70, 884,416.44 and 368,968.02 is: 509,119.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,952.70 : 884,416.44 = 368,968.02 : x
  2. Step 2: Convert to fraction form
    640,952.70/884,416.44 = 368,968.02/x
  3. Step 3: Cross multiply
    640,952.70x = 884,416.44 × 368,968.02
  4. Step 4: Simplify right side
    640,952.70x = 326,321,385,764.16
  5. Step 5: Solve for x
    x = 326,321,385,764.16/640,952.70
  6. Step 6: Final answer
    x = 509,119.30

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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.