Home / 1,978,075.40-2,729,745.54-1,072,657.16

Finding the Fourth Proportional to 1,978,075.40, 2,729,745.54 and 1,072,657.16

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Solution

The fourth proportional to 1,978,075.40, 2,729,745.54 and 1,072,657.16 is: 1,480,267.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,978,075.40 : 2,729,745.54 = 1,072,657.16 : x
  2. Step 2: Convert to fraction form
    1,978,075.40/2,729,745.54 = 1,072,657.16/x
  3. Step 3: Cross multiply
    1,978,075.40x = 2,729,745.54 × 1,072,657.16
  4. Step 4: Simplify right side
    1,978,075.40x = 2,928,081,098,459.07
  5. Step 5: Solve for x
    x = 2,928,081,098,459.07/1,978,075.40
  6. Step 6: Final answer
    x = 1,480,267.69

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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.