Home / 8,085,653.80-12,128,480.70-7,979,365.60

Finding the Fourth Proportional to 8,085,653.80, 12,128,480.70 and 7,979,365.60

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Solution

The fourth proportional to 8,085,653.80, 12,128,480.70 and 7,979,365.60 is: 11,969,048.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,085,653.80 : 12,128,480.70 = 7,979,365.60 : x
  2. Step 2: Convert to fraction form
    8,085,653.80/12,128,480.70 = 7,979,365.60/x
  3. Step 3: Cross multiply
    8,085,653.80x = 12,128,480.70 × 7,979,365.60
  4. Step 4: Simplify right side
    8,085,653.80x = 96,777,581,677,843.91
  5. Step 5: Solve for x
    x = 96,777,581,677,843.91/8,085,653.80
  6. Step 6: Final answer
    x = 11,969,048.40

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1.5x scale

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.