Home / 1,286,823.80-1,930,235.70-487,839.80

Finding the Fourth Proportional to 1,286,823.80, 1,930,235.70 and 487,839.80

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Solution

The fourth proportional to 1,286,823.80, 1,930,235.70 and 487,839.80 is: 731,759.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,286,823.80 : 1,930,235.70 = 487,839.80 : x
  2. Step 2: Convert to fraction form
    1,286,823.80/1,930,235.70 = 487,839.80/x
  3. Step 3: Cross multiply
    1,286,823.80x = 1,930,235.70 × 487,839.80
  4. Step 4: Simplify right side
    1,286,823.80x = 941,645,797,840.86
  5. Step 5: Solve for x
    x = 941,645,797,840.86/1,286,823.80
  6. Step 6: Final answer
    x = 731,759.70

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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.