Home / 804,015.20-1,206,022.80-426,101.60

Finding the Fourth Proportional to 804,015.20, 1,206,022.80 and 426,101.60

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Solution

The fourth proportional to 804,015.20, 1,206,022.80 and 426,101.60 is: 639,152.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    804,015.20 : 1,206,022.80 = 426,101.60 : x
  2. Step 2: Convert to fraction form
    804,015.20/1,206,022.80 = 426,101.60/x
  3. Step 3: Cross multiply
    804,015.20x = 1,206,022.80 × 426,101.60
  4. Step 4: Simplify right side
    804,015.20x = 513,888,244,716.48
  5. Step 5: Solve for x
    x = 513,888,244,716.48/804,015.20
  6. Step 6: Final answer
    x = 639,152.40

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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.