Home / 1,603,444.85-2,405,279.53-643,900.42

Finding the Fourth Proportional to 1,603,444.85, 2,405,279.53 and 643,900.42

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Solution

The fourth proportional to 1,603,444.85, 2,405,279.53 and 643,900.42 is: 965,895.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,603,444.85 : 2,405,279.53 = 643,900.42 : x
  2. Step 2: Convert to fraction form
    1,603,444.85/2,405,279.53 = 643,900.42/x
  3. Step 3: Cross multiply
    1,603,444.85x = 2,405,279.53 × 643,900.42
  4. Step 4: Simplify right side
    1,603,444.85x = 1,548,760,503,395.88
  5. Step 5: Solve for x
    x = 1,548,760,503,395.88/1,603,444.85
  6. Step 6: Final answer
    x = 965,895.71

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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.