Finding the Fourth Proportional to 909,609,299.88, 1,255,264,593.17 and 491,921,576.52
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Solution
The fourth proportional to 909,609,299.88, 1,255,264,593.17 and 491,921,576.52 is: 678,853,808.66
Step by Step Solution
- Step 1: Write the proportion equation
909,609,299.88 : 1,255,264,593.17 = 491,921,576.52 : x - Step 2: Convert to fraction form
909,609,299.88/1,255,264,593.17 = 491,921,576.52/x - Step 3: Cross multiply
909,609,299.88x = 1,255,264,593.17 × 491,921,576.52 - Step 4: Simplify right side
909,609,299.88x = 617,491,737,619,463,168 - Step 5: Solve for x
x = 617,491,737,619,463,168/909,609,299.88 - Step 6: Final answer
x = 678,853,808.66
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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.