Home / 1,265,205.42-1,745,940.05-721,516.19

Finding the Fourth Proportional to 1,265,205.42, 1,745,940.05 and 721,516.19

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Solution

The fourth proportional to 1,265,205.42, 1,745,940.05 and 721,516.19 is: 995,667.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,265,205.42 : 1,745,940.05 = 721,516.19 : x
  2. Step 2: Convert to fraction form
    1,265,205.42/1,745,940.05 = 721,516.19/x
  3. Step 3: Cross multiply
    1,265,205.42x = 1,745,940.05 × 721,516.19
  4. Step 4: Simplify right side
    1,265,205.42x = 1,259,724,009,236.83
  5. Step 5: Solve for x
    x = 1,259,724,009,236.83/1,265,205.42
  6. Step 6: Final answer
    x = 995,667.58

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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.