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Finding the Fourth Proportional to 397,968.40, 596,952.60 and 354,422.80

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Solution

The fourth proportional to 397,968.40, 596,952.60 and 354,422.80 is: 531,634.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,968.40 : 596,952.60 = 354,422.80 : x
  2. Step 2: Convert to fraction form
    397,968.40/596,952.60 = 354,422.80/x
  3. Step 3: Cross multiply
    397,968.40x = 596,952.60 × 354,422.80
  4. Step 4: Simplify right side
    397,968.40x = 211,573,611,959.28
  5. Step 5: Solve for x
    x = 211,573,611,959.28/397,968.40
  6. Step 6: Final answer
    x = 531,634.20

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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.