Home / 1,428,495.54-1,971,347.79-783,975.70

Finding the Fourth Proportional to 1,428,495.54, 1,971,347.79 and 783,975.70

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Solution

The fourth proportional to 1,428,495.54, 1,971,347.79 and 783,975.70 is: 1,081,899.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,428,495.54 : 1,971,347.79 = 783,975.70 : x
  2. Step 2: Convert to fraction form
    1,428,495.54/1,971,347.79 = 783,975.70/x
  3. Step 3: Cross multiply
    1,428,495.54x = 1,971,347.79 × 783,975.70
  4. Step 4: Simplify right side
    1,428,495.54x = 1,545,488,763,608.70
  5. Step 5: Solve for x
    x = 1,545,488,763,608.70/1,428,495.54
  6. Step 6: Final answer
    x = 1,081,899.61

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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.