Home / 2,086,403.86-3,129,605.70-1,139,257.90

Finding the Fourth Proportional to 2,086,403.86, 3,129,605.70 and 1,139,257.90

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Solution

The fourth proportional to 2,086,403.86, 3,129,605.70 and 1,139,257.90 is: 1,708,886.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,086,403.86 : 3,129,605.70 = 1,139,257.90 : x
  2. Step 2: Convert to fraction form
    2,086,403.86/3,129,605.70 = 1,139,257.90/x
  3. Step 3: Cross multiply
    2,086,403.86x = 3,129,605.70 × 1,139,257.90
  4. Step 4: Simplify right side
    2,086,403.86x = 3,565,428,017,610.03
  5. Step 5: Solve for x
    x = 3,565,428,017,610.03/2,086,403.86
  6. Step 6: Final answer
    x = 1,708,886.80

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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.