Home / 687,379.45-1,030,736.23-403,163.07

Finding the Fourth Proportional to 687,379.45, 1,030,736.23 and 403,163.07

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Solution

The fourth proportional to 687,379.45, 1,030,736.23 and 403,163.07 is: 604,549.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,379.45 : 1,030,736.23 = 403,163.07 : x
  2. Step 2: Convert to fraction form
    687,379.45/1,030,736.23 = 403,163.07/x
  3. Step 3: Cross multiply
    687,379.45x = 1,030,736.23 × 403,163.07
  4. Step 4: Simplify right side
    687,379.45x = 415,554,781,839.12
  5. Step 5: Solve for x
    x = 415,554,781,839.12/687,379.45
  6. Step 6: Final answer
    x = 604,549.33

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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.