Home / 670,629.20-1,005,360.60-404,106.80

Finding the Fourth Proportional to 670,629.20, 1,005,360.60 and 404,106.80

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Solution

The fourth proportional to 670,629.20, 1,005,360.60 and 404,106.80 is: 605,808.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,629.20 : 1,005,360.60 = 404,106.80 : x
  2. Step 2: Convert to fraction form
    670,629.20/1,005,360.60 = 404,106.80/x
  3. Step 3: Cross multiply
    670,629.20x = 1,005,360.60 × 404,106.80
  4. Step 4: Simplify right side
    670,629.20x = 406,273,054,912.08
  5. Step 5: Solve for x
    x = 406,273,054,912.08/670,629.20
  6. Step 6: Final answer
    x = 605,808.78

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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.