Home / 777,734.80-1,073,273.78-420,038.80

Finding the Fourth Proportional to 777,734.80, 1,073,273.78 and 420,038.80

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Solution

The fourth proportional to 777,734.80, 1,073,273.78 and 420,038.80 is: 579,653.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,734.80 : 1,073,273.78 = 420,038.80 : x
  2. Step 2: Convert to fraction form
    777,734.80/1,073,273.78 = 420,038.80/x
  3. Step 3: Cross multiply
    777,734.80x = 1,073,273.78 × 420,038.80
  4. Step 4: Simplify right side
    777,734.80x = 450,816,630,622.66
  5. Step 5: Solve for x
    x = 450,816,630,622.66/777,734.80
  6. Step 6: Final answer
    x = 579,653.41

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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.