Home / 909,912.40-1,364,868.60-278,744.20

Finding the Fourth Proportional to 909,912.40, 1,364,868.60 and 278,744.20

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Solution

The fourth proportional to 909,912.40, 1,364,868.60 and 278,744.20 is: 418,116.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,912.40 : 1,364,868.60 = 278,744.20 : x
  2. Step 2: Convert to fraction form
    909,912.40/1,364,868.60 = 278,744.20/x
  3. Step 3: Cross multiply
    909,912.40x = 1,364,868.60 × 278,744.20
  4. Step 4: Simplify right side
    909,912.40x = 380,449,206,012.12
  5. Step 5: Solve for x
    x = 380,449,206,012.12/909,912.40
  6. Step 6: Final answer
    x = 418,116.30

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1.5x scale

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.