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Finding the Fourth Proportional to 486,010.80, 726,683.40 and 360,039.60

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Solution

The fourth proportional to 486,010.80, 726,683.40 and 360,039.60 is: 538,331.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,010.80 : 726,683.40 = 360,039.60 : x
  2. Step 2: Convert to fraction form
    486,010.80/726,683.40 = 360,039.60/x
  3. Step 3: Cross multiply
    486,010.80x = 726,683.40 × 360,039.60
  4. Step 4: Simplify right side
    486,010.80x = 261,634,800,662.64
  5. Step 5: Solve for x
    x = 261,634,800,662.64/486,010.80
  6. Step 6: Final answer
    x = 538,331.25

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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.