Home / 820,239.70-1,230,359.55-460,040.80

Finding the Fourth Proportional to 820,239.70, 1,230,359.55 and 460,040.80

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Solution

The fourth proportional to 820,239.70, 1,230,359.55 and 460,040.80 is: 690,061.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,239.70 : 1,230,359.55 = 460,040.80 : x
  2. Step 2: Convert to fraction form
    820,239.70/1,230,359.55 = 460,040.80/x
  3. Step 3: Cross multiply
    820,239.70x = 1,230,359.55 × 460,040.80
  4. Step 4: Simplify right side
    820,239.70x = 566,015,591,669.64
  5. Step 5: Solve for x
    x = 566,015,591,669.64/820,239.70
  6. Step 6: Final answer
    x = 690,061.20

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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.