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Finding the Fourth Proportional to 505,789.94, 697,981.97 and 276,342.30

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Solution

The fourth proportional to 505,789.94, 697,981.97 and 276,342.30 is: 381,347.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,789.94 : 697,981.97 = 276,342.30 : x
  2. Step 2: Convert to fraction form
    505,789.94/697,981.97 = 276,342.30/x
  3. Step 3: Cross multiply
    505,789.94x = 697,981.97 × 276,342.30
  4. Step 4: Simplify right side
    505,789.94x = 192,881,941,553.26
  5. Step 5: Solve for x
    x = 192,881,941,553.26/505,789.94
  6. Step 6: Final answer
    x = 381,347.92

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1.5x scale

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.