Home / 780,132.20-1,076,582.43-422,436.20

Finding the Fourth Proportional to 780,132.20, 1,076,582.43 and 422,436.20

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Solution

The fourth proportional to 780,132.20, 1,076,582.43 and 422,436.20 is: 582,961.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,132.20 : 1,076,582.43 = 422,436.20 : x
  2. Step 2: Convert to fraction form
    780,132.20/1,076,582.43 = 422,436.20/x
  3. Step 3: Cross multiply
    780,132.20x = 1,076,582.43 × 422,436.20
  4. Step 4: Simplify right side
    780,132.20x = 454,787,385,333.05
  5. Step 5: Solve for x
    x = 454,787,385,333.05/780,132.20
  6. Step 6: Final answer
    x = 582,961.95

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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.