Home / 1,315,791-1,815,806.88-771,936.12

Finding the Fourth Proportional to 1,315,791, 1,815,806.88 and 771,936.12

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Solution

The fourth proportional to 1,315,791, 1,815,806.88 and 771,936.12 is: 1,065,280.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,791 : 1,815,806.88 = 771,936.12 : x
  2. Step 2: Convert to fraction form
    1,315,791/1,815,806.88 = 771,936.12/x
  3. Step 3: Cross multiply
    1,315,791x = 1,815,806.88 × 771,936.12
  4. Step 4: Simplify right side
    1,315,791x = 1,401,686,917,616.51
  5. Step 5: Solve for x
    x = 1,401,686,917,616.51/1,315,791
  6. Step 6: Final answer
    x = 1,065,280.82

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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.