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Finding the Fourth Proportional to 452,603.92, 678,905.78 and 115,645.20

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Solution

The fourth proportional to 452,603.92, 678,905.78 and 115,645.20 is: 173,467.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,603.92 : 678,905.78 = 115,645.20 : x
  2. Step 2: Convert to fraction form
    452,603.92/678,905.78 = 115,645.20/x
  3. Step 3: Cross multiply
    452,603.92x = 678,905.78 × 115,645.20
  4. Step 4: Simplify right side
    452,603.92x = 78,512,194,709.26
  5. Step 5: Solve for x
    x = 78,512,194,709.26/452,603.92
  6. Step 6: Final answer
    x = 173,467.77

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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.