Finding the Fourth Proportional to 612,108.90, 918,163.35 and 521,567.10
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Solution
The fourth proportional to 612,108.90, 918,163.35 and 521,567.10 is: 782,350.65
Step by Step Solution
- Step 1: Write the proportion equation
612,108.90 : 918,163.35 = 521,567.10 : x - Step 2: Convert to fraction form
612,108.90/918,163.35 = 521,567.10/x - Step 3: Cross multiply
612,108.90x = 918,163.35 × 521,567.10 - Step 4: Simplify right side
612,108.90x = 478,883,795,785.79 - Step 5: Solve for x
x = 478,883,795,785.79/612,108.90 - Step 6: Final answer
x = 782,350.65
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Double scale
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Similar ratio
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.