Home / 820,570.65-1,230,732.86-259,532.25

Finding the Fourth Proportional to 820,570.65, 1,230,732.86 and 259,532.25

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Solution

The fourth proportional to 820,570.65, 1,230,732.86 and 259,532.25 is: 389,259.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,570.65 : 1,230,732.86 = 259,532.25 : x
  2. Step 2: Convert to fraction form
    820,570.65/1,230,732.86 = 259,532.25/x
  3. Step 3: Cross multiply
    820,570.65x = 1,230,732.86 × 259,532.25
  4. Step 4: Simplify right side
    820,570.65x = 319,414,867,007.07
  5. Step 5: Solve for x
    x = 319,414,867,007.07/820,570.65
  6. Step 6: Final answer
    x = 389,259.43

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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.