Home / 781,828.20-1,172,991.24-349,479.36

Finding the Fourth Proportional to 781,828.20, 1,172,991.24 and 349,479.36

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Solution

The fourth proportional to 781,828.20, 1,172,991.24 and 349,479.36 is: 524,330.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,828.20 : 1,172,991.24 = 349,479.36 : x
  2. Step 2: Convert to fraction form
    781,828.20/1,172,991.24 = 349,479.36/x
  3. Step 3: Cross multiply
    781,828.20x = 1,172,991.24 × 349,479.36
  4. Step 4: Simplify right side
    781,828.20x = 409,936,227,840.81
  5. Step 5: Solve for x
    x = 409,936,227,840.81/781,828.20
  6. Step 6: Final answer
    x = 524,330.32

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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.