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Finding the Fourth Proportional to 515,481.64, 711,368.46 and 286,039.82

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Solution

The fourth proportional to 515,481.64, 711,368.46 and 286,039.82 is: 394,737.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,481.64 : 711,368.46 = 286,039.82 : x
  2. Step 2: Convert to fraction form
    515,481.64/711,368.46 = 286,039.82/x
  3. Step 3: Cross multiply
    515,481.64x = 711,368.46 × 286,039.82
  4. Step 4: Simplify right side
    515,481.64x = 203,479,708,030.50
  5. Step 5: Solve for x
    x = 203,479,708,030.50/515,481.64
  6. Step 6: Final answer
    x = 394,737.06

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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.