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Finding the Fourth Proportional to 505,700.35, 697,887.74 and 290,840.62

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Solution

The fourth proportional to 505,700.35, 697,887.74 and 290,840.62 is: 401,372.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,700.35 : 697,887.74 = 290,840.62 : x
  2. Step 2: Convert to fraction form
    505,700.35/697,887.74 = 290,840.62/x
  3. Step 3: Cross multiply
    505,700.35x = 697,887.74 × 290,840.62
  4. Step 4: Simplify right side
    505,700.35x = 202,974,102,992.00
  5. Step 5: Solve for x
    x = 202,974,102,992.00/505,700.35
  6. Step 6: Final answer
    x = 401,372.28

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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.