Finding the Fourth Proportional to 517,786,138.10, 776,679,207.15 and 314,606,515.70
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Solution
The fourth proportional to 517,786,138.10, 776,679,207.15 and 314,606,515.70 is: 471,909,773.55
Step by Step Solution
- Step 1: Write the proportion equation
517,786,138.10 : 776,679,207.15 = 314,606,515.70 : x - Step 2: Convert to fraction form
517,786,138.10/776,679,207.15 = 314,606,515.70/x - Step 3: Cross multiply
517,786,138.10x = 776,679,207.15 × 314,606,515.70 - Step 4: Simplify right side
517,786,138.10x = 244,348,339,178,100,000 - Step 5: Solve for x
x = 244,348,339,178,100,000/517,786,138.10 - Step 6: Final answer
x = 471,909,773.55
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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.