Home / 1,265,206.01-1,745,940.87-721,516.78

Finding the Fourth Proportional to 1,265,206.01, 1,745,940.87 and 721,516.78

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Solution

The fourth proportional to 1,265,206.01, 1,745,940.87 and 721,516.78 is: 995,668.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,265,206.01 : 1,745,940.87 = 721,516.78 : x
  2. Step 2: Convert to fraction form
    1,265,206.01/1,745,940.87 = 721,516.78/x
  3. Step 3: Cross multiply
    1,265,206.01x = 1,745,940.87 × 721,516.78
  4. Step 4: Simplify right side
    1,265,206.01x = 1,259,725,636,775.22
  5. Step 5: Solve for x
    x = 1,259,725,636,775.22/1,265,206.01
  6. Step 6: Final answer
    x = 995,668.40

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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.