Finding the Fourth Proportional to 628,748.10, 943,122.15 and 376,805.70
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Solution
The fourth proportional to 628,748.10, 943,122.15 and 376,805.70 is: 565,208.55
Step by Step Solution
- Step 1: Write the proportion equation
628,748.10 : 943,122.15 = 376,805.70 : x - Step 2: Convert to fraction form
628,748.10/943,122.15 = 376,805.70/x - Step 3: Cross multiply
628,748.10x = 943,122.15 × 376,805.70 - Step 4: Simplify right side
628,748.10x = 355,373,801,916.26 - Step 5: Solve for x
x = 355,373,801,916.26/628,748.10 - Step 6: Final answer
x = 565,208.55
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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.