Home / 913,758.72-1,261,382.40-687,459.84

Finding the Fourth Proportional to 913,758.72, 1,261,382.40 and 687,459.84

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Solution

The fourth proportional to 913,758.72, 1,261,382.40 and 687,459.84 is: 948,992.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,758.72 : 1,261,382.40 = 687,459.84 : x
  2. Step 2: Convert to fraction form
    913,758.72/1,261,382.40 = 687,459.84/x
  3. Step 3: Cross multiply
    913,758.72x = 1,261,382.40 × 687,459.84
  4. Step 4: Simplify right side
    913,758.72x = 867,149,742,882.82
  5. Step 5: Solve for x
    x = 867,149,742,882.82/913,758.72
  6. Step 6: Final answer
    x = 948,992.03

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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.