Home / 779,200-1,167,914.16-329,640.64

Finding the Fourth Proportional to 779,200, 1,167,914.16 and 329,640.64

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Solution

The fourth proportional to 779,200, 1,167,914.16 and 329,640.64 is: 494,086.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    779,200 : 1,167,914.16 = 329,640.64 : x
  2. Step 2: Convert to fraction form
    779,200/1,167,914.16 = 329,640.64/x
  3. Step 3: Cross multiply
    779,200x = 1,167,914.16 × 329,640.64
  4. Step 4: Simplify right side
    779,200x = 384,991,971,167.46
  5. Step 5: Solve for x
    x = 384,991,971,167.46/779,200
  6. Step 6: Final answer
    x = 494,086.21

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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.