Finding the Fourth Proportional to 7,129,234.12, 9,838,345.70 and 3,866,047.99
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Solution
The fourth proportional to 7,129,234.12, 9,838,345.70 and 3,866,047.99 is: 5,335,147.64
Step by Step Solution
- Step 1: Write the proportion equation
7,129,234.12 : 9,838,345.70 = 3,866,047.99 : x - Step 2: Convert to fraction form
7,129,234.12/9,838,345.70 = 3,866,047.99/x - Step 3: Cross multiply
7,129,234.12x = 9,838,345.70 × 3,866,047.99 - Step 4: Simplify right side
7,129,234.12x = 38,035,516,577,783.66 - Step 5: Solve for x
x = 38,035,516,577,783.66/7,129,234.12 - Step 6: Final answer
x = 5,335,147.64
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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.