Finding the Fourth Proportional to 489,969.66, 676,212.30 and 286,070.70
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Solution
The fourth proportional to 489,969.66, 676,212.30 and 286,070.70 is: 394,809.19
Step by Step Solution
- Step 1: Write the proportion equation
489,969.66 : 676,212.30 = 286,070.70 : x - Step 2: Convert to fraction form
489,969.66/676,212.30 = 286,070.70/x - Step 3: Cross multiply
489,969.66x = 676,212.30 × 286,070.70 - Step 4: Simplify right side
489,969.66x = 193,444,526,009.61 - Step 5: Solve for x
x = 193,444,526,009.61/489,969.66 - Step 6: Final answer
x = 394,809.19
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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.