Home / 820,719.68-1,133,105.44-629,364.80

Finding the Fourth Proportional to 820,719.68, 1,133,105.44 and 629,364.80

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Solution

The fourth proportional to 820,719.68, 1,133,105.44 and 629,364.80 is: 868,916.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,719.68 : 1,133,105.44 = 629,364.80 : x
  2. Step 2: Convert to fraction form
    820,719.68/1,133,105.44 = 629,364.80/x
  3. Step 3: Cross multiply
    820,719.68x = 1,133,105.44 × 629,364.80
  4. Step 4: Simplify right side
    820,719.68x = 713,136,678,624.51
  5. Step 5: Solve for x
    x = 713,136,678,624.51/820,719.68
  6. Step 6: Final answer
    x = 868,916.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.