Home / 817,130.40-1,224,850.24-311,555.36

Finding the Fourth Proportional to 817,130.40, 1,224,850.24 and 311,555.36

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Solution

The fourth proportional to 817,130.40, 1,224,850.24 and 311,555.36 is: 467,010.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,130.40 : 1,224,850.24 = 311,555.36 : x
  2. Step 2: Convert to fraction form
    817,130.40/1,224,850.24 = 311,555.36/x
  3. Step 3: Cross multiply
    817,130.40x = 1,224,850.24 × 311,555.36
  4. Step 4: Simplify right side
    817,130.40x = 381,608,657,469.29
  5. Step 5: Solve for x
    x = 381,608,657,469.29/817,130.40
  6. Step 6: Final answer
    x = 467,010.72

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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.