Home / 804,920.40-1,207,380.60-720,939.60

Finding the Fourth Proportional to 804,920.40, 1,207,380.60 and 720,939.60

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Solution

The fourth proportional to 804,920.40, 1,207,380.60 and 720,939.60 is: 1,081,409.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    804,920.40 : 1,207,380.60 = 720,939.60 : x
  2. Step 2: Convert to fraction form
    804,920.40/1,207,380.60 = 720,939.60/x
  3. Step 3: Cross multiply
    804,920.40x = 1,207,380.60 × 720,939.60
  4. Step 4: Simplify right side
    804,920.40x = 870,448,486,811.76
  5. Step 5: Solve for x
    x = 870,448,486,811.76/804,920.40
  6. Step 6: Final answer
    x = 1,081,409.40

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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.