Home / 1,315,571.87-1,973,357.89-318,299.87

Finding the Fourth Proportional to 1,315,571.87, 1,973,357.89 and 318,299.87

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Solution

The fourth proportional to 1,315,571.87, 1,973,357.89 and 318,299.87 is: 477,449.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,571.87 : 1,973,357.89 = 318,299.87 : x
  2. Step 2: Convert to fraction form
    1,315,571.87/1,973,357.89 = 318,299.87/x
  3. Step 3: Cross multiply
    1,315,571.87x = 1,973,357.89 × 318,299.87
  4. Step 4: Simplify right side
    1,315,571.87x = 628,119,563,988.12
  5. Step 5: Solve for x
    x = 628,119,563,988.12/1,315,571.87
  6. Step 6: Final answer
    x = 477,449.83

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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.