Finding the Fourth Proportional to 717,896.60, 990,703.86 and 395,618.26
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Solution
The fourth proportional to 717,896.60, 990,703.86 and 395,618.26 is: 545,956.81
Step by Step Solution
- Step 1: Write the proportion equation
717,896.60 : 990,703.86 = 395,618.26 : x - Step 2: Convert to fraction form
717,896.60/990,703.86 = 395,618.26/x - Step 3: Cross multiply
717,896.60x = 990,703.86 × 395,618.26 - Step 4: Simplify right side
717,896.60x = 391,940,537,268.48 - Step 5: Solve for x
x = 391,940,537,268.48/717,896.60 - Step 6: Final answer
x = 545,956.81
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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.