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Finding the Fourth Proportional to 636,215.90, 877,955.73 and 349,733.93

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Solution

The fourth proportional to 636,215.90, 877,955.73 and 349,733.93 is: 482,620.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,215.90 : 877,955.73 = 349,733.93 : x
  2. Step 2: Convert to fraction form
    636,215.90/877,955.73 = 349,733.93/x
  3. Step 3: Cross multiply
    636,215.90x = 877,955.73 × 349,733.93
  4. Step 4: Simplify right side
    636,215.90x = 307,050,907,818.92
  5. Step 5: Solve for x
    x = 307,050,907,818.92/636,215.90
  6. Step 6: Final answer
    x = 482,620.61

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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.