Home / 1,421,515.56-2,131,958.97-410,417.67

Finding the Fourth Proportional to 1,421,515.56, 2,131,958.97 and 410,417.67

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Solution

The fourth proportional to 1,421,515.56, 2,131,958.97 and 410,417.67 is: 615,535.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421,515.56 : 2,131,958.97 = 410,417.67 : x
  2. Step 2: Convert to fraction form
    1,421,515.56/2,131,958.97 = 410,417.67/x
  3. Step 3: Cross multiply
    1,421,515.56x = 2,131,958.97 × 410,417.67
  4. Step 4: Simplify right side
    1,421,515.56x = 874,993,633,003
  5. Step 5: Solve for x
    x = 874,993,633,003/1,421,515.56
  6. Step 6: Final answer
    x = 615,535.74

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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.