Home / 874,846.20-1,312,269.30-313,807.80

Finding the Fourth Proportional to 874,846.20, 1,312,269.30 and 313,807.80

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Solution

The fourth proportional to 874,846.20, 1,312,269.30 and 313,807.80 is: 470,711.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,846.20 : 1,312,269.30 = 313,807.80 : x
  2. Step 2: Convert to fraction form
    874,846.20/1,312,269.30 = 313,807.80/x
  3. Step 3: Cross multiply
    874,846.20x = 1,312,269.30 × 313,807.80
  4. Step 4: Simplify right side
    874,846.20x = 411,800,342,040.54
  5. Step 5: Solve for x
    x = 411,800,342,040.54/874,846.20
  6. Step 6: Final answer
    x = 470,711.70

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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.