Home / 913,863.68-1,261,131.72-511,455.68

Finding the Fourth Proportional to 913,863.68, 1,261,131.72 and 511,455.68

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Solution

The fourth proportional to 913,863.68, 1,261,131.72 and 511,455.68 is: 705,808.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,863.68 : 1,261,131.72 = 511,455.68 : x
  2. Step 2: Convert to fraction form
    913,863.68/1,261,131.72 = 511,455.68/x
  3. Step 3: Cross multiply
    913,863.68x = 1,261,131.72 × 511,455.68
  4. Step 4: Simplify right side
    913,863.68x = 645,012,981,422.17
  5. Step 5: Solve for x
    x = 645,012,981,422.17/913,863.68
  6. Step 6: Final answer
    x = 705,808.75

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.