Home / 2,661,396.40-3,992,094.60-978,281.20

Finding the Fourth Proportional to 2,661,396.40, 3,992,094.60 and 978,281.20

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Solution

The fourth proportional to 2,661,396.40, 3,992,094.60 and 978,281.20 is: 1,467,421.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,661,396.40 : 3,992,094.60 = 978,281.20 : x
  2. Step 2: Convert to fraction form
    2,661,396.40/3,992,094.60 = 978,281.20/x
  3. Step 3: Cross multiply
    2,661,396.40x = 3,992,094.60 × 978,281.20
  4. Step 4: Simplify right side
    2,661,396.40x = 3,905,391,095,801.52
  5. Step 5: Solve for x
    x = 3,905,391,095,801.52/2,661,396.40
  6. Step 6: Final answer
    x = 1,467,421.80

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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.