Home / 790,908.49-1,091,448.21-428,324.05

Finding the Fourth Proportional to 790,908.49, 1,091,448.21 and 428,324.05

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Solution

The fourth proportional to 790,908.49, 1,091,448.21 and 428,324.05 is: 591,084.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,908.49 : 1,091,448.21 = 428,324.05 : x
  2. Step 2: Convert to fraction form
    790,908.49/1,091,448.21 = 428,324.05/x
  3. Step 3: Cross multiply
    790,908.49x = 1,091,448.21 × 428,324.05
  4. Step 4: Simplify right side
    790,908.49x = 467,493,517,672.45
  5. Step 5: Solve for x
    x = 467,493,517,672.45/790,908.49
  6. Step 6: Final answer
    x = 591,084.21

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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.