Home / 814,021.60-1,220,740.80-414,529.60

Finding the Fourth Proportional to 814,021.60, 1,220,740.80 and 414,529.60

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Solution

The fourth proportional to 814,021.60, 1,220,740.80 and 414,529.60 is: 621,645.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,021.60 : 1,220,740.80 = 414,529.60 : x
  2. Step 2: Convert to fraction form
    814,021.60/1,220,740.80 = 414,529.60/x
  3. Step 3: Cross multiply
    814,021.60x = 1,220,740.80 × 414,529.60
  4. Step 4: Simplify right side
    814,021.60x = 506,033,195,527.68
  5. Step 5: Solve for x
    x = 506,033,195,527.68/814,021.60
  6. Step 6: Final answer
    x = 621,645.91

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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.