Home / 858,783.72-1,288,377.88-259,749.84

Finding the Fourth Proportional to 858,783.72, 1,288,377.88 and 259,749.84

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Solution

The fourth proportional to 858,783.72, 1,288,377.88 and 259,749.84 is: 389,685.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,783.72 : 1,288,377.88 = 259,749.84 : x
  2. Step 2: Convert to fraction form
    858,783.72/1,288,377.88 = 259,749.84/x
  3. Step 3: Cross multiply
    858,783.72x = 1,288,377.88 × 259,749.84
  4. Step 4: Simplify right side
    858,783.72x = 334,655,948,189.54
  5. Step 5: Solve for x
    x = 334,655,948,189.54/858,783.72
  6. Step 6: Final answer
    x = 389,685.95

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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.