Home / 810,474.03-1,215,711.03-311,721.39

Finding the Fourth Proportional to 810,474.03, 1,215,711.03 and 311,721.39

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Solution

The fourth proportional to 810,474.03, 1,215,711.03 and 311,721.39 is: 467,582.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,474.03 : 1,215,711.03 = 311,721.39 : x
  2. Step 2: Convert to fraction form
    810,474.03/1,215,711.03 = 311,721.39/x
  3. Step 3: Cross multiply
    810,474.03x = 1,215,711.03 × 311,721.39
  4. Step 4: Simplify right side
    810,474.03x = 378,963,132,109.93
  5. Step 5: Solve for x
    x = 378,963,132,109.93/810,474.03
  6. Step 6: Final answer
    x = 467,582.08

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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.