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Finding the Fourth Proportional to 927,344.40, 1,389,704.40 and 814,495.20

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Solution

The fourth proportional to 927,344.40, 1,389,704.40 and 814,495.20 is: 1,220,590.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    927,344.40 : 1,389,704.40 = 814,495.20 : x
  2. Step 2: Convert to fraction form
    927,344.40/1,389,704.40 = 814,495.20/x
  3. Step 3: Cross multiply
    927,344.40x = 1,389,704.40 × 814,495.20
  4. Step 4: Simplify right side
    927,344.40x = 1,131,907,563,218.88
  5. Step 5: Solve for x
    x = 1,131,907,563,218.88/927,344.40
  6. Step 6: Final answer
    x = 1,220,590.28

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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.