Home / 6,240,619.20-9,360,928.80-1,981,120.80

Finding the Fourth Proportional to 6,240,619.20, 9,360,928.80 and 1,981,120.80

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Solution

The fourth proportional to 6,240,619.20, 9,360,928.80 and 1,981,120.80 is: 2,971,681.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,240,619.20 : 9,360,928.80 = 1,981,120.80 : x
  2. Step 2: Convert to fraction form
    6,240,619.20/9,360,928.80 = 1,981,120.80/x
  3. Step 3: Cross multiply
    6,240,619.20x = 9,360,928.80 × 1,981,120.80
  4. Step 4: Simplify right side
    6,240,619.20x = 18,545,130,752,999.04
  5. Step 5: Solve for x
    x = 18,545,130,752,999.04/6,240,619.20
  6. Step 6: Final answer
    x = 2,971,681.20

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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.