Home / 817,131.40-1,224,851.74-311,556.36

Finding the Fourth Proportional to 817,131.40, 1,224,851.74 and 311,556.36

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Solution

The fourth proportional to 817,131.40, 1,224,851.74 and 311,556.36 is: 467,012.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,131.40 : 1,224,851.74 = 311,556.36 : x
  2. Step 2: Convert to fraction form
    817,131.40/1,224,851.74 = 311,556.36/x
  3. Step 3: Cross multiply
    817,131.40x = 1,224,851.74 × 311,556.36
  4. Step 4: Simplify right side
    817,131.40x = 381,610,349,654.07
  5. Step 5: Solve for x
    x = 381,610,349,654.07/817,131.40
  6. Step 6: Final answer
    x = 467,012.22

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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.