Home / 490,335.40-676,621.38-275,458.60

Finding the Fourth Proportional to 490,335.40, 676,621.38 and 275,458.60

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Solution

The fourth proportional to 490,335.40, 676,621.38 and 275,458.60 is: 380,109.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,335.40 : 676,621.38 = 275,458.60 : x
  2. Step 2: Convert to fraction form
    490,335.40/676,621.38 = 275,458.60/x
  3. Step 3: Cross multiply
    490,335.40x = 676,621.38 × 275,458.60
  4. Step 4: Simplify right side
    490,335.40x = 186,381,178,064.87
  5. Step 5: Solve for x
    x = 186,381,178,064.87/490,335.40
  6. Step 6: Final answer
    x = 380,109.57

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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.