Finding the Fourth Proportional to 665,421.26, 918,299.75 and 407,293.07
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Solution
The fourth proportional to 665,421.26, 918,299.75 and 407,293.07 is: 562,075.70
Step by Step Solution
- Step 1: Write the proportion equation
665,421.26 : 918,299.75 = 407,293.07 : x - Step 2: Convert to fraction form
665,421.26/918,299.75 = 407,293.07/x - Step 3: Cross multiply
665,421.26x = 918,299.75 × 407,293.07 - Step 4: Simplify right side
665,421.26x = 374,017,117,729.77 - Step 5: Solve for x
x = 374,017,117,729.77/665,421.26 - Step 6: Final answer
x = 562,075.70
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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.