Home / 727,686.30-1,004,238.09-405,396.21

Finding the Fourth Proportional to 727,686.30, 1,004,238.09 and 405,396.21

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Solution

The fourth proportional to 727,686.30, 1,004,238.09 and 405,396.21 is: 559,464.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    727,686.30 : 1,004,238.09 = 405,396.21 : x
  2. Step 2: Convert to fraction form
    727,686.30/1,004,238.09 = 405,396.21/x
  3. Step 3: Cross multiply
    727,686.30x = 1,004,238.09 × 405,396.21
  4. Step 4: Simplify right side
    727,686.30x = 407,114,315,623.64
  5. Step 5: Solve for x
    x = 407,114,315,623.64/727,686.30
  6. Step 6: Final answer
    x = 559,464.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.