Home / 505,670,238.40-697,881,561.60-285,667,836.16

Finding the Fourth Proportional to 505,670,238.40, 697,881,561.60 and 285,667,836.16

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Solution

The fourth proportional to 505,670,238.40, 697,881,561.60 and 285,667,836.16 is: 394,253,607.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,670,238.40 : 697,881,561.60 = 285,667,836.16 : x
  2. Step 2: Convert to fraction form
    505,670,238.40/697,881,561.60 = 285,667,836.16/x
  3. Step 3: Cross multiply
    505,670,238.40x = 697,881,561.60 × 285,667,836.16
  4. Step 4: Simplify right side
    505,670,238.40x = 199,362,315,598,233,760
  5. Step 5: Solve for x
    x = 199,362,315,598,233,760/505,670,238.40
  6. Step 6: Final answer
    x = 394,253,607.31

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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.