Home / 859,279.78-1,289,511.36-298,314.28

Finding the Fourth Proportional to 859,279.78, 1,289,511.36 and 298,314.28

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Solution

The fourth proportional to 859,279.78, 1,289,511.36 and 298,314.28 is: 447,676.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,279.78 : 1,289,511.36 = 298,314.28 : x
  2. Step 2: Convert to fraction form
    859,279.78/1,289,511.36 = 298,314.28/x
  3. Step 3: Cross multiply
    859,279.78x = 1,289,511.36 × 298,314.28
  4. Step 4: Simplify right side
    859,279.78x = 384,679,652,910.22
  5. Step 5: Solve for x
    x = 384,679,652,910.22/859,279.78
  6. Step 6: Final answer
    x = 447,676.84

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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.