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Finding the Fourth Proportional to 654,149.60, 981,661.80 and 298,980.80

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Solution

The fourth proportional to 654,149.60, 981,661.80 and 298,980.80 is: 448,671.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,149.60 : 981,661.80 = 298,980.80 : x
  2. Step 2: Convert to fraction form
    654,149.60/981,661.80 = 298,980.80/x
  3. Step 3: Cross multiply
    654,149.60x = 981,661.80 × 298,980.80
  4. Step 4: Simplify right side
    654,149.60x = 293,498,030,293.44
  5. Step 5: Solve for x
    x = 293,498,030,293.44/654,149.60
  6. Step 6: Final answer
    x = 448,671.11

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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.