Home / 777,800.25-1,073,365.07-420,104.25

Finding the Fourth Proportional to 777,800.25, 1,073,365.07 and 420,104.25

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Solution

The fourth proportional to 777,800.25, 1,073,365.07 and 420,104.25 is: 579,744.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,800.25 : 1,073,365.07 = 420,104.25 : x
  2. Step 2: Convert to fraction form
    777,800.25/1,073,365.07 = 420,104.25/x
  3. Step 3: Cross multiply
    777,800.25x = 1,073,365.07 × 420,104.25
  4. Step 4: Simplify right side
    777,800.25x = 450,925,225,608.03
  5. Step 5: Solve for x
    x = 450,925,225,608.03/777,800.25
  6. Step 6: Final answer
    x = 579,744.25

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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.