Finding the Fourth Proportional to 547,775.40, 821,663.10 and 379,813.80
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Solution
The fourth proportional to 547,775.40, 821,663.10 and 379,813.80 is: 569,720.70
Step by Step Solution
- Step 1: Write the proportion equation
547,775.40 : 821,663.10 = 379,813.80 : x - Step 2: Convert to fraction form
547,775.40/821,663.10 = 379,813.80/x - Step 3: Cross multiply
547,775.40x = 821,663.10 × 379,813.80 - Step 4: Simplify right side
547,775.40x = 312,078,984,330.78 - Step 5: Solve for x
x = 312,078,984,330.78/547,775.40 - Step 6: Final answer
x = 569,720.70
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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.