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Finding the Fourth Proportional to 678,157.92, 936,634.65 and 446,619.89

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Solution

The fourth proportional to 678,157.92, 936,634.65 and 446,619.89 is: 616,846.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,157.92 : 936,634.65 = 446,619.89 : x
  2. Step 2: Convert to fraction form
    678,157.92/936,634.65 = 446,619.89/x
  3. Step 3: Cross multiply
    678,157.92x = 936,634.65 × 446,619.89
  4. Step 4: Simplify right side
    678,157.92x = 418,319,661,696.58
  5. Step 5: Solve for x
    x = 418,319,661,696.58/678,157.92
  6. Step 6: Final answer
    x = 616,846.97

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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.