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Finding the Fourth Proportional to 505,760.92, 697,970.16 and 290,900.68

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Solution

The fourth proportional to 505,760.92, 697,970.16 and 290,900.68 is: 401,454.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,760.92 : 697,970.16 = 290,900.68 : x
  2. Step 2: Convert to fraction form
    505,760.92/697,970.16 = 290,900.68/x
  3. Step 3: Cross multiply
    505,760.92x = 697,970.16 × 290,900.68
  4. Step 4: Simplify right side
    505,760.92x = 203,039,994,163.71
  5. Step 5: Solve for x
    x = 203,039,994,163.71/505,760.92
  6. Step 6: Final answer
    x = 401,454.49

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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.