Home / 813,653.88-1,122,908.64-451,191.38

Finding the Fourth Proportional to 813,653.88, 1,122,908.64 and 451,191.38

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Solution

The fourth proportional to 813,653.88, 1,122,908.64 and 451,191.38 is: 622,680.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,653.88 : 1,122,908.64 = 451,191.38 : x
  2. Step 2: Convert to fraction form
    813,653.88/1,122,908.64 = 451,191.38/x
  3. Step 3: Cross multiply
    813,653.88x = 1,122,908.64 × 451,191.38
  4. Step 4: Simplify right side
    813,653.88x = 506,646,698,895.52
  5. Step 5: Solve for x
    x = 506,646,698,895.52/813,653.88
  6. Step 6: Final answer
    x = 622,680.86

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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.