Finding the Fourth Proportional to 627,820.78, 866,518.35 and 373,122.70
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Solution
The fourth proportional to 627,820.78, 866,518.35 and 373,122.70 is: 514,984.02
Step by Step Solution
- Step 1: Write the proportion equation
627,820.78 : 866,518.35 = 373,122.70 : x - Step 2: Convert to fraction form
627,820.78/866,518.35 = 373,122.70/x - Step 3: Cross multiply
627,820.78x = 866,518.35 × 373,122.70 - Step 4: Simplify right side
627,820.78x = 323,317,666,351.55 - Step 5: Solve for x
x = 323,317,666,351.55/627,820.78 - Step 6: Final answer
x = 514,984.02
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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.