Finding the Fourth Proportional to 517,631,178.79, 776,832,390.96 and 379,812,912.31
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Solution
The fourth proportional to 517,631,178.79, 776,832,390.96 and 379,812,912.31 is: 570,002,319.95
Step by Step Solution
- Step 1: Write the proportion equation
517,631,178.79 : 776,832,390.96 = 379,812,912.31 : x - Step 2: Convert to fraction form
517,631,178.79/776,832,390.96 = 379,812,912.31/x - Step 3: Cross multiply
517,631,178.79x = 776,832,390.96 × 379,812,912.31 - Step 4: Simplify right side
517,631,178.79x = 295,050,972,787,258,112 - Step 5: Solve for x
x = 295,050,972,787,258,112/517,631,178.79 - Step 6: Final answer
x = 570,002,319.95
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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.