Home / 1,261,989.60-1,892,984.40-978,554.40

Finding the Fourth Proportional to 1,261,989.60, 1,892,984.40 and 978,554.40

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Solution

The fourth proportional to 1,261,989.60, 1,892,984.40 and 978,554.40 is: 1,467,831.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,261,989.60 : 1,892,984.40 = 978,554.40 : x
  2. Step 2: Convert to fraction form
    1,261,989.60/1,892,984.40 = 978,554.40/x
  3. Step 3: Cross multiply
    1,261,989.60x = 1,892,984.40 × 978,554.40
  4. Step 4: Simplify right side
    1,261,989.60x = 1,852,388,213,751.36
  5. Step 5: Solve for x
    x = 1,852,388,213,751.36/1,261,989.60
  6. Step 6: Final answer
    x = 1,467,831.60

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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.