Home / 821,871.81-1,133,448.66-515,976.73

Finding the Fourth Proportional to 821,871.81, 1,133,448.66 and 515,976.73

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Solution

The fourth proportional to 821,871.81, 1,133,448.66 and 515,976.73 is: 711,586.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,871.81 : 1,133,448.66 = 515,976.73 : x
  2. Step 2: Convert to fraction form
    821,871.81/1,133,448.66 = 515,976.73/x
  3. Step 3: Cross multiply
    821,871.81x = 1,133,448.66 × 515,976.73
  4. Step 4: Simplify right side
    821,871.81x = 584,833,130,376.06
  5. Step 5: Solve for x
    x = 584,833,130,376.06/821,871.81
  6. Step 6: Final answer
    x = 711,586.80

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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.