Home / 812,079.04-1,218,199.68-279,529.60

Finding the Fourth Proportional to 812,079.04, 1,218,199.68 and 279,529.60

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Solution

The fourth proportional to 812,079.04, 1,218,199.68 and 279,529.60 is: 419,322.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,079.04 : 1,218,199.68 = 279,529.60 : x
  2. Step 2: Convert to fraction form
    812,079.04/1,218,199.68 = 279,529.60/x
  3. Step 3: Cross multiply
    812,079.04x = 1,218,199.68 × 279,529.60
  4. Step 4: Simplify right side
    812,079.04x = 340,522,869,270.53
  5. Step 5: Solve for x
    x = 340,522,869,270.53/812,079.04
  6. Step 6: Final answer
    x = 419,322.32

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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.