Home / 790,908.98-1,091,448.90-428,324.54

Finding the Fourth Proportional to 790,908.98, 1,091,448.90 and 428,324.54

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Solution

The fourth proportional to 790,908.98, 1,091,448.90 and 428,324.54 is: 591,084.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,908.98 : 1,091,448.90 = 428,324.54 : x
  2. Step 2: Convert to fraction form
    790,908.98/1,091,448.90 = 428,324.54/x
  3. Step 3: Cross multiply
    790,908.98x = 1,091,448.90 × 428,324.54
  4. Step 4: Simplify right side
    790,908.98x = 467,494,342,568.76
  5. Step 5: Solve for x
    x = 467,494,342,568.76/790,908.98
  6. Step 6: Final answer
    x = 591,084.89

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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.