Finding the Fourth Proportional to 561,213.90, 774,491.79 and 306,569.26
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Solution
The fourth proportional to 561,213.90, 774,491.79 and 306,569.26 is: 423,074.65
Step by Step Solution
- Step 1: Write the proportion equation
561,213.90 : 774,491.79 = 306,569.26 : x - Step 2: Convert to fraction form
561,213.90/774,491.79 = 306,569.26/x - Step 3: Cross multiply
561,213.90x = 774,491.79 × 306,569.26 - Step 4: Simplify right side
561,213.90x = 237,435,374,936.38 - Step 5: Solve for x
x = 237,435,374,936.38/561,213.90 - Step 6: Final answer
x = 423,074.65
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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.