Home / 1,428,392.80-1,971,085.62-783,854.29

Finding the Fourth Proportional to 1,428,392.80, 1,971,085.62 and 783,854.29

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Solution

The fourth proportional to 1,428,392.80, 1,971,085.62 and 783,854.29 is: 1,081,665.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,428,392.80 : 1,971,085.62 = 783,854.29 : x
  2. Step 2: Convert to fraction form
    1,428,392.80/1,971,085.62 = 783,854.29/x
  3. Step 3: Cross multiply
    1,428,392.80x = 1,971,085.62 × 783,854.29
  4. Step 4: Simplify right side
    1,428,392.80x = 1,545,043,919,194.31
  5. Step 5: Solve for x
    x = 1,545,043,919,194.31/1,428,392.80
  6. Step 6: Final answer
    x = 1,081,665.99

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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.