Home / 5,321,918.40-7,981,322.40-1,909,809.60

Finding the Fourth Proportional to 5,321,918.40, 7,981,322.40 and 1,909,809.60

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Solution

The fourth proportional to 5,321,918.40, 7,981,322.40 and 1,909,809.60 is: 2,864,156.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,321,918.40 : 7,981,322.40 = 1,909,809.60 : x
  2. Step 2: Convert to fraction form
    5,321,918.40/7,981,322.40 = 1,909,809.60/x
  3. Step 3: Cross multiply
    5,321,918.40x = 7,981,322.40 × 1,909,809.60
  4. Step 4: Simplify right side
    5,321,918.40x = 15,242,806,140,215.04
  5. Step 5: Solve for x
    x = 15,242,806,140,215.04/5,321,918.40
  6. Step 6: Final answer
    x = 2,864,156.31

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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.