Home / 909,912.40-1,364,933.40-278,825.20

Finding the Fourth Proportional to 909,912.40, 1,364,933.40 and 278,825.20

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Solution

The fourth proportional to 909,912.40, 1,364,933.40 and 278,825.20 is: 418,257.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,912.40 : 1,364,933.40 = 278,825.20 : x
  2. Step 2: Convert to fraction form
    909,912.40/1,364,933.40 = 278,825.20/x
  3. Step 3: Cross multiply
    909,912.40x = 1,364,933.40 × 278,825.20
  4. Step 4: Simplify right side
    909,912.40x = 380,577,828,241.68
  5. Step 5: Solve for x
    x = 380,577,828,241.68/909,912.40
  6. Step 6: Final answer
    x = 418,257.66

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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.