Home / 1,428,396.19-1,971,309.17-783,940.96

Finding the Fourth Proportional to 1,428,396.19, 1,971,309.17 and 783,940.96

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Solution

The fourth proportional to 1,428,396.19, 1,971,309.17 and 783,940.96 is: 1,081,905.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,428,396.19 : 1,971,309.17 = 783,940.96 : x
  2. Step 2: Convert to fraction form
    1,428,396.19/1,971,309.17 = 783,940.96/x
  3. Step 3: Cross multiply
    1,428,396.19x = 1,971,309.17 × 783,940.96
  4. Step 4: Simplify right side
    1,428,396.19x = 1,545,390,003,186.60
  5. Step 5: Solve for x
    x = 1,545,390,003,186.60/1,428,396.19
  6. Step 6: Final answer
    x = 1,081,905.72

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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.