Finding the Fourth Proportional to 680,778.63, 939,466.80 and 374,848.65
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Solution
The fourth proportional to 680,778.63, 939,466.80 and 374,848.65 is: 517,286.89
Step by Step Solution
- Step 1: Write the proportion equation
680,778.63 : 939,466.80 = 374,848.65 : x - Step 2: Convert to fraction form
680,778.63/939,466.80 = 374,848.65/x - Step 3: Cross multiply
680,778.63x = 939,466.80 × 374,848.65 - Step 4: Simplify right side
680,778.63x = 352,157,861,699.82 - Step 5: Solve for x
x = 352,157,861,699.82/680,778.63 - Step 6: Final answer
x = 517,286.89
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1.5x scale
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.