Finding the Fourth Proportional to 509,335,423.70, 764,003,135.55 and 509,335,423.70
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Solution
The fourth proportional to 509,335,423.70, 764,003,135.55 and 509,335,423.70 is: 764,003,135.55
Step by Step Solution
- Step 1: Write the proportion equation
509,335,423.70 : 764,003,135.55 = 509,335,423.70 : x - Step 2: Convert to fraction form
509,335,423.70/764,003,135.55 = 509,335,423.70/x - Step 3: Cross multiply
509,335,423.70x = 764,003,135.55 × 509,335,423.70 - Step 4: Simplify right side
509,335,423.70x = 389,133,860,753,487,744 - Step 5: Solve for x
x = 389,133,860,753,487,744/509,335,423.70 - Step 6: Final answer
x = 764,003,135.55
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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.