Home / 654,830.20-981,323.70-485,025.40

Finding the Fourth Proportional to 654,830.20, 981,323.70 and 485,025.40

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Solution

The fourth proportional to 654,830.20, 981,323.70 and 485,025.40 is: 726,855.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,830.20 : 981,323.70 = 485,025.40 : x
  2. Step 2: Convert to fraction form
    654,830.20/981,323.70 = 485,025.40/x
  3. Step 3: Cross multiply
    654,830.20x = 981,323.70 × 485,025.40
  4. Step 4: Simplify right side
    654,830.20x = 475,966,920,121.98
  5. Step 5: Solve for x
    x = 475,966,920,121.98/654,830.20
  6. Step 6: Final answer
    x = 726,855.48

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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.