Finding the Fourth Proportional to 673,721,474.28, 929,683,744.74 and 380,394,994.92
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Solution
The fourth proportional to 673,721,474.28, 929,683,744.74 and 380,394,994.92 is: 524,915,795.11
Step by Step Solution
- Step 1: Write the proportion equation
673,721,474.28 : 929,683,744.74 = 380,394,994.92 : x - Step 2: Convert to fraction form
673,721,474.28/929,683,744.74 = 380,394,994.92/x - Step 3: Cross multiply
673,721,474.28x = 929,683,744.74 × 380,394,994.92 - Step 4: Simplify right side
673,721,474.28x = 353,647,043,357,578,880 - Step 5: Solve for x
x = 353,647,043,357,578,880/673,721,474.28 - Step 6: Final answer
x = 524,915,795.11
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Double scale
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1.5x scale
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.