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Finding the Fourth Proportional to 505,429.65, 697,509.24 and 275,998.92

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Solution

The fourth proportional to 505,429.65, 697,509.24 and 275,998.92 is: 380,887.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,429.65 : 697,509.24 = 275,998.92 : x
  2. Step 2: Convert to fraction form
    505,429.65/697,509.24 = 275,998.92/x
  3. Step 3: Cross multiply
    505,429.65x = 697,509.24 × 275,998.92
  4. Step 4: Simplify right side
    505,429.65x = 192,511,796,930.02
  5. Step 5: Solve for x
    x = 192,511,796,930.02/505,429.65
  6. Step 6: Final answer
    x = 380,887.42

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Double scale
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Similar ratio
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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.