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Finding the Fourth Proportional to 636,149.09, 877,886.40 and 349,663.03

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Solution

The fourth proportional to 636,149.09, 877,886.40 and 349,663.03 is: 482,535.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,149.09 : 877,886.40 = 349,663.03 : x
  2. Step 2: Convert to fraction form
    636,149.09/877,886.40 = 349,663.03/x
  3. Step 3: Cross multiply
    636,149.09x = 877,886.40 × 349,663.03
  4. Step 4: Simplify right side
    636,149.09x = 306,964,417,736.31
  5. Step 5: Solve for x
    x = 306,964,417,736.31/636,149.09
  6. Step 6: Final answer
    x = 482,535.34

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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.