Home / 790,857.46-1,091,377.80-428,273.02

Finding the Fourth Proportional to 790,857.46, 1,091,377.80 and 428,273.02

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Solution

The fourth proportional to 790,857.46, 1,091,377.80 and 428,273.02 is: 591,013.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,857.46 : 1,091,377.80 = 428,273.02 : x
  2. Step 2: Convert to fraction form
    790,857.46/1,091,377.80 = 428,273.02/x
  3. Step 3: Cross multiply
    790,857.46x = 1,091,377.80 × 428,273.02
  4. Step 4: Simplify right side
    790,857.46x = 467,407,666,366.96
  5. Step 5: Solve for x
    x = 467,407,666,366.96/790,857.46
  6. Step 6: Final answer
    x = 591,013.79

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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.