Home / 874,900.20-1,312,350.30-313,861.80

Finding the Fourth Proportional to 874,900.20, 1,312,350.30 and 313,861.80

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Solution

The fourth proportional to 874,900.20, 1,312,350.30 and 313,861.80 is: 470,792.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,900.20 : 1,312,350.30 = 313,861.80 : x
  2. Step 2: Convert to fraction form
    874,900.20/1,312,350.30 = 313,861.80/x
  3. Step 3: Cross multiply
    874,900.20x = 1,312,350.30 × 313,861.80
  4. Step 4: Simplify right side
    874,900.20x = 411,896,627,388.54
  5. Step 5: Solve for x
    x = 411,896,627,388.54/874,900.20
  6. Step 6: Final answer
    x = 470,792.70

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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.