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Finding the Fourth Proportional to 636,015.28, 877,509.48 and 381,273.52

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Solution

The fourth proportional to 636,015.28, 877,509.48 and 381,273.52 is: 526,042.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,015.28 : 877,509.48 = 381,273.52 : x
  2. Step 2: Convert to fraction form
    636,015.28/877,509.48 = 381,273.52/x
  3. Step 3: Cross multiply
    636,015.28x = 877,509.48 × 381,273.52
  4. Step 4: Simplify right side
    636,015.28x = 334,571,128,272.97
  5. Step 5: Solve for x
    x = 334,571,128,272.97/636,015.28
  6. Step 6: Final answer
    x = 526,042.59

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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.