Home / 1,978,996.05-2,730,784.14-1,107,878.40

Finding the Fourth Proportional to 1,978,996.05, 2,730,784.14 and 1,107,878.40

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Solution

The fourth proportional to 1,978,996.05, 2,730,784.14 and 1,107,878.40 is: 1,528,743.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,978,996.05 : 2,730,784.14 = 1,107,878.40 : x
  2. Step 2: Convert to fraction form
    1,978,996.05/2,730,784.14 = 1,107,878.40/x
  3. Step 3: Cross multiply
    1,978,996.05x = 2,730,784.14 × 1,107,878.40
  4. Step 4: Simplify right side
    1,978,996.05x = 3,025,376,763,768.58
  5. Step 5: Solve for x
    x = 3,025,376,763,768.58/1,978,996.05
  6. Step 6: Final answer
    x = 1,528,743.20

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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.