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Finding the Fourth Proportional to 505,448.51, 697,520.57 and 276,007.91

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Solution

The fourth proportional to 505,448.51, 697,520.57 and 276,007.91 is: 380,891.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,448.51 : 697,520.57 = 276,007.91 : x
  2. Step 2: Convert to fraction form
    505,448.51/697,520.57 = 276,007.91/x
  3. Step 3: Cross multiply
    505,448.51x = 697,520.57 × 276,007.91
  4. Step 4: Simplify right side
    505,448.51x = 192,521,189,840.07
  5. Step 5: Solve for x
    x = 192,521,189,840.07/505,448.51
  6. Step 6: Final answer
    x = 380,891.80

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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.