Home / 769,740.04-1,062,220.26-420,867.64

Finding the Fourth Proportional to 769,740.04, 1,062,220.26 and 420,867.64

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Solution

The fourth proportional to 769,740.04, 1,062,220.26 and 420,867.64 is: 580,785.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,740.04 : 1,062,220.26 = 420,867.64 : x
  2. Step 2: Convert to fraction form
    769,740.04/1,062,220.26 = 420,867.64/x
  3. Step 3: Cross multiply
    769,740.04x = 1,062,220.26 × 420,867.64
  4. Step 4: Simplify right side
    769,740.04x = 447,054,133,986.39
  5. Step 5: Solve for x
    x = 447,054,133,986.39/769,740.04
  6. Step 6: Final answer
    x = 580,785.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.