Home / 768,085.36-1,151,634.70-319,116.40

Finding the Fourth Proportional to 768,085.36, 1,151,634.70 and 319,116.40

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Solution

The fourth proportional to 768,085.36, 1,151,634.70 and 319,116.40 is: 478,469.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,085.36 : 1,151,634.70 = 319,116.40 : x
  2. Step 2: Convert to fraction form
    768,085.36/1,151,634.70 = 319,116.40/x
  3. Step 3: Cross multiply
    768,085.36x = 1,151,634.70 × 319,116.40
  4. Step 4: Simplify right side
    768,085.36x = 367,505,519,579.08
  5. Step 5: Solve for x
    x = 367,505,519,579.08/768,085.36
  6. Step 6: Final answer
    x = 478,469.63

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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.