Home / 980,137.60-1,470,206.40-419,228.80

Finding the Fourth Proportional to 980,137.60, 1,470,206.40 and 419,228.80

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Solution

The fourth proportional to 980,137.60, 1,470,206.40 and 419,228.80 is: 628,843.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    980,137.60 : 1,470,206.40 = 419,228.80 : x
  2. Step 2: Convert to fraction form
    980,137.60/1,470,206.40 = 419,228.80/x
  3. Step 3: Cross multiply
    980,137.60x = 1,470,206.40 × 419,228.80
  4. Step 4: Simplify right side
    980,137.60x = 616,352,864,824.32
  5. Step 5: Solve for x
    x = 616,352,864,824.32/980,137.60
  6. Step 6: Final answer
    x = 628,843.20

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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.