Home / 1,428,478.47-1,971,203.23-783,940.19

Finding the Fourth Proportional to 1,428,478.47, 1,971,203.23 and 783,940.19

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Solution

The fourth proportional to 1,428,478.47, 1,971,203.23 and 783,940.19 is: 1,081,784.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,428,478.47 : 1,971,203.23 = 783,940.19 : x
  2. Step 2: Convert to fraction form
    1,428,478.47/1,971,203.23 = 783,940.19/x
  3. Step 3: Cross multiply
    1,428,478.47x = 1,971,203.23 × 783,940.19
  4. Step 4: Simplify right side
    1,428,478.47x = 1,545,305,422,838.95
  5. Step 5: Solve for x
    x = 1,545,305,422,838.95/1,428,478.47
  6. Step 6: Final answer
    x = 1,081,784.19

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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.