Home / 505,717.03-697,909.56-290,856.84

Finding the Fourth Proportional to 505,717.03, 697,909.56 and 290,856.84

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Solution

The fourth proportional to 505,717.03, 697,909.56 and 290,856.84 is: 401,393.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,717.03 : 697,909.56 = 290,856.84 : x
  2. Step 2: Convert to fraction form
    505,717.03/697,909.56 = 290,856.84/x
  3. Step 3: Cross multiply
    505,717.03x = 697,909.56 × 290,856.84
  4. Step 4: Simplify right side
    505,717.03x = 202,991,765,519.52
  5. Step 5: Solve for x
    x = 202,991,765,519.52/505,717.03
  6. Step 6: Final answer
    x = 401,393.97

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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.