Finding the Fourth Proportional to 7,709,968.99, 10,639,171.96 and 4,272,136.21
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Solution
The fourth proportional to 7,709,968.99, 10,639,171.96 and 4,272,136.21 is: 5,895,223.68
Step by Step Solution
- Step 1: Write the proportion equation
7,709,968.99 : 10,639,171.96 = 4,272,136.21 : x - Step 2: Convert to fraction form
7,709,968.99/10,639,171.96 = 4,272,136.21/x - Step 3: Cross multiply
7,709,968.99x = 10,639,171.96 × 4,272,136.21 - Step 4: Simplify right side
7,709,968.99x = 45,451,991,774,732.67 - Step 5: Solve for x
x = 45,451,991,774,732.67/7,709,968.99 - Step 6: Final answer
x = 5,895,223.68
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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.