Home / 1,397,405.75-1,928,428.04-785,553.16

Finding the Fourth Proportional to 1,397,405.75, 1,928,428.04 and 785,553.16

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Solution

The fourth proportional to 1,397,405.75, 1,928,428.04 and 785,553.16 is: 1,084,067.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,397,405.75 : 1,928,428.04 = 785,553.16 : x
  2. Step 2: Convert to fraction form
    1,397,405.75/1,928,428.04 = 785,553.16/x
  3. Step 3: Cross multiply
    1,397,405.75x = 1,928,428.04 × 785,553.16
  4. Step 4: Simplify right side
    1,397,405.75x = 1,514,882,740,654.61
  5. Step 5: Solve for x
    x = 1,514,882,740,654.61/1,397,405.75
  6. Step 6: Final answer
    x = 1,084,067.92

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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.