Home / 505,755.72-697,914.90-290,899.40

Finding the Fourth Proportional to 505,755.72, 697,914.90 and 290,899.40

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Solution

The fourth proportional to 505,755.72, 697,914.90 and 290,899.40 is: 401,425.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,755.72 : 697,914.90 = 290,899.40 : x
  2. Step 2: Convert to fraction form
    505,755.72/697,914.90 = 290,899.40/x
  3. Step 3: Cross multiply
    505,755.72x = 697,914.90 × 290,899.40
  4. Step 4: Simplify right side
    505,755.72x = 203,023,022,171.49
  5. Step 5: Solve for x
    x = 203,023,022,171.49/505,755.72
  6. Step 6: Final answer
    x = 401,425.06

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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.