Home / 782,978.56-1,080,586.26-438,872.94

Finding the Fourth Proportional to 782,978.56, 1,080,586.26 and 438,872.94

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Solution

The fourth proportional to 782,978.56, 1,080,586.26 and 438,872.94 is: 605,687.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,978.56 : 1,080,586.26 = 438,872.94 : x
  2. Step 2: Convert to fraction form
    782,978.56/1,080,586.26 = 438,872.94/x
  3. Step 3: Cross multiply
    782,978.56x = 1,080,586.26 × 438,872.94
  4. Step 4: Simplify right side
    782,978.56x = 474,240,068,849.80
  5. Step 5: Solve for x
    x = 474,240,068,849.80/782,978.56
  6. Step 6: Final answer
    x = 605,687.17

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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.