Home / 450,119.01-620,871.57-288,718.41

Finding the Fourth Proportional to 450,119.01, 620,871.57 and 288,718.41

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Solution

The fourth proportional to 450,119.01, 620,871.57 and 288,718.41 is: 398,243.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,119.01 : 620,871.57 = 288,718.41 : x
  2. Step 2: Convert to fraction form
    450,119.01/620,871.57 = 288,718.41/x
  3. Step 3: Cross multiply
    450,119.01x = 620,871.57 × 288,718.41
  4. Step 4: Simplify right side
    450,119.01x = 179,257,052,504.60
  5. Step 5: Solve for x
    x = 179,257,052,504.60/450,119.01
  6. Step 6: Final answer
    x = 398,243.68

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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.