Home / 1,428,488.49-1,971,338.13-783,968.67

Finding the Fourth Proportional to 1,428,488.49, 1,971,338.13 and 783,968.67

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Solution

The fourth proportional to 1,428,488.49, 1,971,338.13 and 783,968.67 is: 1,081,889.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,428,488.49 : 1,971,338.13 = 783,968.67 : x
  2. Step 2: Convert to fraction form
    1,428,488.49/1,971,338.13 = 783,968.67/x
  3. Step 3: Cross multiply
    1,428,488.49x = 1,971,338.13 × 783,968.67
  4. Step 4: Simplify right side
    1,428,488.49x = 1,545,467,331,896.39
  5. Step 5: Solve for x
    x = 1,545,467,331,896.39/1,428,488.49
  6. Step 6: Final answer
    x = 1,081,889.94

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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.