Finding the Fourth Proportional to 4,772,478.09, 7,158,731.92 and 1,178,245.45
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Solution
The fourth proportional to 4,772,478.09, 7,158,731.92 and 1,178,245.45 is: 1,767,371.83
Step by Step Solution
- Step 1: Write the proportion equation
4,772,478.09 : 7,158,731.92 = 1,178,245.45 : x - Step 2: Convert to fraction form
4,772,478.09/7,158,731.92 = 1,178,245.45/x - Step 3: Cross multiply
4,772,478.09x = 7,158,731.92 × 1,178,245.45 - Step 4: Simplify right side
4,772,478.09x = 8,434,743,312,509.76 - Step 5: Solve for x
x = 8,434,743,312,509.76/4,772,478.09 - Step 6: Final answer
x = 1,767,371.83
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.