Home / 980,147.60-1,470,221.40-419,238.80

Finding the Fourth Proportional to 980,147.60, 1,470,221.40 and 419,238.80

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Solution

The fourth proportional to 980,147.60, 1,470,221.40 and 419,238.80 is: 628,858.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    980,147.60 : 1,470,221.40 = 419,238.80 : x
  2. Step 2: Convert to fraction form
    980,147.60/1,470,221.40 = 419,238.80/x
  3. Step 3: Cross multiply
    980,147.60x = 1,470,221.40 × 419,238.80
  4. Step 4: Simplify right side
    980,147.60x = 616,373,855,470.32
  5. Step 5: Solve for x
    x = 616,373,855,470.32/980,147.60
  6. Step 6: Final answer
    x = 628,858.20

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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.