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Finding the Fourth Proportional to 621,068.60, 930,938.52 and 321,247.28

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Solution

The fourth proportional to 621,068.60, 930,938.52 and 321,247.28 is: 481,527.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,068.60 : 930,938.52 = 321,247.28 : x
  2. Step 2: Convert to fraction form
    621,068.60/930,938.52 = 321,247.28/x
  3. Step 3: Cross multiply
    621,068.60x = 930,938.52 × 321,247.28
  4. Step 4: Simplify right side
    621,068.60x = 299,061,467,397.23
  5. Step 5: Solve for x
    x = 299,061,467,397.23/621,068.60
  6. Step 6: Final answer
    x = 481,527.27

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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.