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Finding the Fourth Proportional to 926,441.80, 1,389,662.70 and 889,700.20

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Solution

The fourth proportional to 926,441.80, 1,389,662.70 and 889,700.20 is: 1,334,550.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    926,441.80 : 1,389,662.70 = 889,700.20 : x
  2. Step 2: Convert to fraction form
    926,441.80/1,389,662.70 = 889,700.20/x
  3. Step 3: Cross multiply
    926,441.80x = 1,389,662.70 × 889,700.20
  4. Step 4: Simplify right side
    926,441.80x = 1,236,383,182,122.54
  5. Step 5: Solve for x
    x = 1,236,383,182,122.54/926,441.80
  6. Step 6: Final answer
    x = 1,334,550.30

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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.