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Finding the Fourth Proportional to 532,968.40, 798,415.80 and 321,979.60

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Solution

The fourth proportional to 532,968.40, 798,415.80 and 321,979.60 is: 482,343.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    532,968.40 : 798,415.80 = 321,979.60 : x
  2. Step 2: Convert to fraction form
    532,968.40/798,415.80 = 321,979.60/x
  3. Step 3: Cross multiply
    532,968.40x = 798,415.80 × 321,979.60
  4. Step 4: Simplify right side
    532,968.40x = 257,073,599,917.68
  5. Step 5: Solve for x
    x = 257,073,599,917.68/532,968.40
  6. Step 6: Final answer
    x = 482,343.04

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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.