Home / 423,118.08-634,736.34-123,620.58

Finding the Fourth Proportional to 423,118.08, 634,736.34 and 123,620.58

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Solution

The fourth proportional to 423,118.08, 634,736.34 and 123,620.58 is: 185,448.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,118.08 : 634,736.34 = 123,620.58 : x
  2. Step 2: Convert to fraction form
    423,118.08/634,736.34 = 123,620.58/x
  3. Step 3: Cross multiply
    423,118.08x = 634,736.34 × 123,620.58
  4. Step 4: Simplify right side
    423,118.08x = 78,466,474,497.88
  5. Step 5: Solve for x
    x = 78,466,474,497.88/423,118.08
  6. Step 6: Final answer
    x = 185,448.17

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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.