Home / 515,924.22-711,965.40-286,469.58

Finding the Fourth Proportional to 515,924.22, 711,965.40 and 286,469.58

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Solution

The fourth proportional to 515,924.22, 711,965.40 and 286,469.58 is: 395,322.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,924.22 : 711,965.40 = 286,469.58 : x
  2. Step 2: Convert to fraction form
    515,924.22/711,965.40 = 286,469.58/x
  3. Step 3: Cross multiply
    515,924.22x = 711,965.40 × 286,469.58
  4. Step 4: Simplify right side
    515,924.22x = 203,956,429,112.53
  5. Step 5: Solve for x
    x = 203,956,429,112.53/515,924.22
  6. Step 6: Final answer
    x = 395,322.45

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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.