Home / 820,491.92-1,230,931.20-280,754.07

Finding the Fourth Proportional to 820,491.92, 1,230,931.20 and 280,754.07

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Solution

The fourth proportional to 820,491.92, 1,230,931.20 and 280,754.07 is: 421,197.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,491.92 : 1,230,931.20 = 280,754.07 : x
  2. Step 2: Convert to fraction form
    820,491.92/1,230,931.20 = 280,754.07/x
  3. Step 3: Cross multiply
    820,491.92x = 1,230,931.20 × 280,754.07
  4. Step 4: Simplify right side
    820,491.92x = 345,588,945,342.81
  5. Step 5: Solve for x
    x = 345,588,945,342.81/820,491.92
  6. Step 6: Final answer
    x = 421,197.26

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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.