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Finding the Fourth Proportional to 986,448.60, 1,479,672.90 and 455,007.60

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Solution

The fourth proportional to 986,448.60, 1,479,672.90 and 455,007.60 is: 682,511.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    986,448.60 : 1,479,672.90 = 455,007.60 : x
  2. Step 2: Convert to fraction form
    986,448.60/1,479,672.90 = 455,007.60/x
  3. Step 3: Cross multiply
    986,448.60x = 1,479,672.90 × 455,007.60
  4. Step 4: Simplify right side
    986,448.60x = 673,262,415,014.04
  5. Step 5: Solve for x
    x = 673,262,415,014.04/986,448.60
  6. Step 6: Final answer
    x = 682,511.40

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Similar ratio
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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.