Home / 691,326.78-1,036,990.80-192,690.78

Finding the Fourth Proportional to 691,326.78, 1,036,990.80 and 192,690.78

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Solution

The fourth proportional to 691,326.78, 1,036,990.80 and 192,690.78 is: 289,036.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,326.78 : 1,036,990.80 = 192,690.78 : x
  2. Step 2: Convert to fraction form
    691,326.78/1,036,990.80 = 192,690.78/x
  3. Step 3: Cross multiply
    691,326.78x = 1,036,990.80 × 192,690.78
  4. Step 4: Simplify right side
    691,326.78x = 199,818,566,104.82
  5. Step 5: Solve for x
    x = 199,818,566,104.82/691,326.78
  6. Step 6: Final answer
    x = 289,036.35

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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.