Finding the Fourth Proportional to 7,028,979.46, 9,700,889.99 and 3,931,674.94
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Solution
The fourth proportional to 7,028,979.46, 9,700,889.99 and 3,931,674.94 is: 5,426,213.90
Step by Step Solution
- Step 1: Write the proportion equation
7,028,979.46 : 9,700,889.99 = 3,931,674.94 : x - Step 2: Convert to fraction form
7,028,979.46/9,700,889.99 = 3,931,674.94/x - Step 3: Cross multiply
7,028,979.46x = 9,700,889.99 × 3,931,674.94 - Step 4: Simplify right side
7,028,979.46x = 38,140,746,069,379.85 - Step 5: Solve for x
x = 38,140,746,069,379.85/7,028,979.46 - Step 6: Final answer
x = 5,426,213.90
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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.