Home / 724,403.70-1,087,742.88-613,537.38

Finding the Fourth Proportional to 724,403.70, 1,087,742.88 and 613,537.38

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Solution

The fourth proportional to 724,403.70, 1,087,742.88 and 613,537.38 is: 921,269.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,403.70 : 1,087,742.88 = 613,537.38 : x
  2. Step 2: Convert to fraction form
    724,403.70/1,087,742.88 = 613,537.38/x
  3. Step 3: Cross multiply
    724,403.70x = 1,087,742.88 × 613,537.38
  4. Step 4: Simplify right side
    724,403.70x = 667,370,916,708.85
  5. Step 5: Solve for x
    x = 667,370,916,708.85/724,403.70
  6. Step 6: Final answer
    x = 921,269.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.