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Finding the Fourth Proportional to 505,349.89, 697,378.07 and 275,905.17

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Solution

The fourth proportional to 505,349.89, 697,378.07 and 275,905.17 is: 380,746.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,349.89 : 697,378.07 = 275,905.17 : x
  2. Step 2: Convert to fraction form
    505,349.89/697,378.07 = 275,905.17/x
  3. Step 3: Cross multiply
    505,349.89x = 697,378.07 × 275,905.17
  4. Step 4: Simplify right side
    505,349.89x = 192,410,215,647.39
  5. Step 5: Solve for x
    x = 192,410,215,647.39/505,349.89
  6. Step 6: Final answer
    x = 380,746.53

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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.