Home / 780,329.20-1,076,821.20-490,092.44

Finding the Fourth Proportional to 780,329.20, 1,076,821.20 and 490,092.44

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Solution

The fourth proportional to 780,329.20, 1,076,821.20 and 490,092.44 is: 676,306.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,329.20 : 1,076,821.20 = 490,092.44 : x
  2. Step 2: Convert to fraction form
    780,329.20/1,076,821.20 = 490,092.44/x
  3. Step 3: Cross multiply
    780,329.20x = 1,076,821.20 × 490,092.44
  4. Step 4: Simplify right side
    780,329.20x = 527,741,929,351.73
  5. Step 5: Solve for x
    x = 527,741,929,351.73/780,329.20
  6. Step 6: Final answer
    x = 676,306.78

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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.