Home / 813,067.85-1,220,718.98-413,976.80

Finding the Fourth Proportional to 813,067.85, 1,220,718.98 and 413,976.80

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Solution

The fourth proportional to 813,067.85, 1,220,718.98 and 413,976.80 is: 621,534.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,067.85 : 1,220,718.98 = 413,976.80 : x
  2. Step 2: Convert to fraction form
    813,067.85/1,220,718.98 = 413,976.80/x
  3. Step 3: Cross multiply
    813,067.85x = 1,220,718.98 × 413,976.80
  4. Step 4: Simplify right side
    813,067.85x = 505,349,341,126.40
  5. Step 5: Solve for x
    x = 505,349,341,126.40/813,067.85
  6. Step 6: Final answer
    x = 621,534.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.