Finding the Fourth Proportional to 656,798.74, 906,383.81 and 354,992.74
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Solution
The fourth proportional to 656,798.74, 906,383.81 and 354,992.74 is: 489,890.82
Step by Step Solution
- Step 1: Write the proportion equation
656,798.74 : 906,383.81 = 354,992.74 : x - Step 2: Convert to fraction form
656,798.74/906,383.81 = 354,992.74/x - Step 3: Cross multiply
656,798.74x = 906,383.81 × 354,992.74 - Step 4: Simplify right side
656,798.74x = 321,759,672,203.54 - Step 5: Solve for x
x = 321,759,672,203.54/656,798.74 - Step 6: Final answer
x = 489,890.82
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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.