Home / 1,097,385.20-1,646,077.80-978,412.40

Finding the Fourth Proportional to 1,097,385.20, 1,646,077.80 and 978,412.40

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Solution

The fourth proportional to 1,097,385.20, 1,646,077.80 and 978,412.40 is: 1,467,618.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,097,385.20 : 1,646,077.80 = 978,412.40 : x
  2. Step 2: Convert to fraction form
    1,097,385.20/1,646,077.80 = 978,412.40/x
  3. Step 3: Cross multiply
    1,097,385.20x = 1,646,077.80 × 978,412.40
  4. Step 4: Simplify right side
    1,097,385.20x = 1,610,542,930,884.72
  5. Step 5: Solve for x
    x = 1,610,542,930,884.72/1,097,385.20
  6. Step 6: Final answer
    x = 1,467,618.60

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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.