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Finding the Fourth Proportional to 820,903.80, 1,229,022.90 and 727,591.80

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Solution

The fourth proportional to 820,903.80, 1,229,022.90 and 727,591.80 is: 1,089,320.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,903.80 : 1,229,022.90 = 727,591.80 : x
  2. Step 2: Convert to fraction form
    820,903.80/1,229,022.90 = 727,591.80/x
  3. Step 3: Cross multiply
    820,903.80x = 1,229,022.90 × 727,591.80
  4. Step 4: Simplify right side
    820,903.80x = 894,226,984,052.22
  5. Step 5: Solve for x
    x = 894,226,984,052.22/820,903.80
  6. Step 6: Final answer
    x = 1,089,320.07

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1.5x scale

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.