Home / 490,440.36-676,868.16-275,575.75

Finding the Fourth Proportional to 490,440.36, 676,868.16 and 275,575.75

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Solution

The fourth proportional to 490,440.36, 676,868.16 and 275,575.75 is: 380,328.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,440.36 : 676,868.16 = 275,575.75 : x
  2. Step 2: Convert to fraction form
    490,440.36/676,868.16 = 275,575.75/x
  3. Step 3: Cross multiply
    490,440.36x = 676,868.16 × 275,575.75
  4. Step 4: Simplify right side
    490,440.36x = 186,528,450,843.12
  5. Step 5: Solve for x
    x = 186,528,450,843.12/490,440.36
  6. Step 6: Final answer
    x = 380,328.51

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1.5x scale

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.