Home / 1,428,474.93-1,971,325.13-783,857.49

Finding the Fourth Proportional to 1,428,474.93, 1,971,325.13 and 783,857.49

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Solution

The fourth proportional to 1,428,474.93, 1,971,325.13 and 783,857.49 is: 1,081,739.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,428,474.93 : 1,971,325.13 = 783,857.49 : x
  2. Step 2: Convert to fraction form
    1,428,474.93/1,971,325.13 = 783,857.49/x
  3. Step 3: Cross multiply
    1,428,474.93x = 1,971,325.13 × 783,857.49
  4. Step 4: Simplify right side
    1,428,474.93x = 1,545,237,964,456.44
  5. Step 5: Solve for x
    x = 1,545,237,964,456.44/1,428,474.93
  6. Step 6: Final answer
    x = 1,081,739.65

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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.