Finding the Fourth Proportional to 7,709,970.99, 10,639,174.71 and 4,272,138.21
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Solution
The fourth proportional to 7,709,970.99, 10,639,174.71 and 4,272,138.21 is: 5,895,226.44
Step by Step Solution
- Step 1: Write the proportion equation
7,709,970.99 : 10,639,174.71 = 4,272,138.21 : x - Step 2: Convert to fraction form
7,709,970.99/10,639,174.71 = 4,272,138.21/x - Step 3: Cross multiply
7,709,970.99x = 10,639,174.71 × 4,272,138.21 - Step 4: Simplify right side
7,709,970.99x = 45,452,024,801,456.67 - Step 5: Solve for x
x = 45,452,024,801,456.67/7,709,970.99 - Step 6: Final answer
x = 5,895,226.44
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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.