Home / 1,265,204.42-1,745,938.67-721,515.19

Finding the Fourth Proportional to 1,265,204.42, 1,745,938.67 and 721,515.19

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Solution

The fourth proportional to 1,265,204.42, 1,745,938.67 and 721,515.19 is: 995,666.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,265,204.42 : 1,745,938.67 = 721,515.19 : x
  2. Step 2: Convert to fraction form
    1,265,204.42/1,745,938.67 = 721,515.19/x
  3. Step 3: Cross multiply
    1,265,204.42x = 1,745,938.67 × 721,515.19
  4. Step 4: Simplify right side
    1,265,204.42x = 1,259,721,269,788.24
  5. Step 5: Solve for x
    x = 1,259,721,269,788.24/1,265,204.42
  6. Step 6: Final answer
    x = 995,666.20

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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.