Home / 820,862,941,817.75-1,231,499,498,355-579,311,684,745.80

Finding the Fourth Proportional to 820,862,941,817.75, 1,231,499,498,355 and 579,311,684,745.80

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Solution

The fourth proportional to 820,862,941,817.75, 1,231,499,498,355 and 579,311,684,745.80 is: 869,112,263,218.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,862,941,817.75 : 1,231,499,498,355 = 579,311,684,745.80 : x
  2. Step 2: Convert to fraction form
    820,862,941,817.75/1,231,499,498,355 = 579,311,684,745.80/x
  3. Step 3: Cross multiply
    820,862,941,817.75x = 1,231,499,498,355 × 579,311,684,745.80
  4. Step 4: Simplify right side
    820,862,941,817.75x = 713,422,049,155,642,694,828,032
  5. Step 5: Solve for x
    x = 713,422,049,155,642,694,828,032/820,862,941,817.75
  6. Step 6: Final answer
    x = 869,112,263,218.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.