Home / 1,294,424.10-1,786,313.55-721,500.60

Finding the Fourth Proportional to 1,294,424.10, 1,786,313.55 and 721,500.60

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Solution

The fourth proportional to 1,294,424.10, 1,786,313.55 and 721,500.60 is: 995,675.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,294,424.10 : 1,786,313.55 = 721,500.60 : x
  2. Step 2: Convert to fraction form
    1,294,424.10/1,786,313.55 = 721,500.60/x
  3. Step 3: Cross multiply
    1,294,424.10x = 1,786,313.55 × 721,500.60
  4. Step 4: Simplify right side
    1,294,424.10x = 1,288,826,298,113.13
  5. Step 5: Solve for x
    x = 1,288,826,298,113.13/1,294,424.10
  6. Step 6: Final answer
    x = 995,675.45

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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.