Home / 654,632.40-981,948.60-639,080.40

Finding the Fourth Proportional to 654,632.40, 981,948.60 and 639,080.40

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Solution

The fourth proportional to 654,632.40, 981,948.60 and 639,080.40 is: 958,620.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,632.40 : 981,948.60 = 639,080.40 : x
  2. Step 2: Convert to fraction form
    654,632.40/981,948.60 = 639,080.40/x
  3. Step 3: Cross multiply
    654,632.40x = 981,948.60 × 639,080.40
  4. Step 4: Simplify right side
    654,632.40x = 627,544,104,067.44
  5. Step 5: Solve for x
    x = 627,544,104,067.44/654,632.40
  6. Step 6: Final answer
    x = 958,620.60

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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.