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Finding the Fourth Proportional to 505,699.35, 697,886.36 and 290,839.62

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Solution

The fourth proportional to 505,699.35, 697,886.36 and 290,839.62 is: 401,370.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,699.35 : 697,886.36 = 290,839.62 : x
  2. Step 2: Convert to fraction form
    505,699.35/697,886.36 = 290,839.62/x
  3. Step 3: Cross multiply
    505,699.35x = 697,886.36 × 290,839.62
  4. Step 4: Simplify right side
    505,699.35x = 202,973,003,745.58
  5. Step 5: Solve for x
    x = 202,973,003,745.58/505,699.35
  6. Step 6: Final answer
    x = 401,370.90

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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.