Home / 1,421,605.29-1,961,814.78-809,814.72

Finding the Fourth Proportional to 1,421,605.29, 1,961,814.78 and 809,814.72

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Solution

The fourth proportional to 1,421,605.29, 1,961,814.78 and 809,814.72 is: 1,117,544.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421,605.29 : 1,961,814.78 = 809,814.72 : x
  2. Step 2: Convert to fraction form
    1,421,605.29/1,961,814.78 = 809,814.72/x
  3. Step 3: Cross multiply
    1,421,605.29x = 1,961,814.78 × 809,814.72
  4. Step 4: Simplify right side
    1,421,605.29x = 1,588,706,486,757.56
  5. Step 5: Solve for x
    x = 1,588,706,486,757.56/1,421,605.29
  6. Step 6: Final answer
    x = 1,117,544.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.