Home / 1,620,075.11-2,234,029.07-1,391,389.61

Finding the Fourth Proportional to 1,620,075.11, 2,234,029.07 and 1,391,389.61

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Solution

The fourth proportional to 1,620,075.11, 2,234,029.07 and 1,391,389.61 is: 1,918,679.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,620,075.11 : 2,234,029.07 = 1,391,389.61 : x
  2. Step 2: Convert to fraction form
    1,620,075.11/2,234,029.07 = 1,391,389.61/x
  3. Step 3: Cross multiply
    1,620,075.11x = 2,234,029.07 × 1,391,389.61
  4. Step 4: Simplify right side
    1,620,075.11x = 3,108,404,825,265.82
  5. Step 5: Solve for x
    x = 3,108,404,825,265.82/1,620,075.11
  6. Step 6: Final answer
    x = 1,918,679.46

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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.