Home / 1,265,205.17-1,745,939.70-721,515.94

Finding the Fourth Proportional to 1,265,205.17, 1,745,939.70 and 721,515.94

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Solution

The fourth proportional to 1,265,205.17, 1,745,939.70 and 721,515.94 is: 995,667.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,265,205.17 : 1,745,939.70 = 721,515.94 : x
  2. Step 2: Convert to fraction form
    1,265,205.17/1,745,939.70 = 721,515.94/x
  3. Step 3: Cross multiply
    1,265,205.17x = 1,745,939.70 × 721,515.94
  4. Step 4: Simplify right side
    1,265,205.17x = 1,259,723,326,011.24
  5. Step 5: Solve for x
    x = 1,259,723,326,011.24/1,265,205.17
  6. Step 6: Final answer
    x = 995,667.23

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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.