Home / 1,388,481.93-1,916,282.54-776,668.68

Finding the Fourth Proportional to 1,388,481.93, 1,916,282.54 and 776,668.68

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Solution

The fourth proportional to 1,388,481.93, 1,916,282.54 and 776,668.68 is: 1,071,902.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388,481.93 : 1,916,282.54 = 776,668.68 : x
  2. Step 2: Convert to fraction form
    1,388,481.93/1,916,282.54 = 776,668.68/x
  3. Step 3: Cross multiply
    1,388,481.93x = 1,916,282.54 × 776,668.68
  4. Step 4: Simplify right side
    1,388,481.93x = 1,488,316,632,790.52
  5. Step 5: Solve for x
    x = 1,488,316,632,790.52/1,388,481.93
  6. Step 6: Final answer
    x = 1,071,902.05

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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.