Home / 859,276.28-1,289,506.11-298,310.78

Finding the Fourth Proportional to 859,276.28, 1,289,506.11 and 298,310.78

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Solution

The fourth proportional to 859,276.28, 1,289,506.11 and 298,310.78 is: 447,671.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,276.28 : 1,289,506.11 = 298,310.78 : x
  2. Step 2: Convert to fraction form
    859,276.28/1,289,506.11 = 298,310.78/x
  3. Step 3: Cross multiply
    859,276.28x = 1,289,506.11 × 298,310.78
  4. Step 4: Simplify right side
    859,276.28x = 384,673,573,488.87
  5. Step 5: Solve for x
    x = 384,673,573,488.87/859,276.28
  6. Step 6: Final answer
    x = 447,671.58

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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.