Finding the Fourth Proportional to 7,913,807.70, 10,921,055.49 and 4,475,975.70
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Solution
The fourth proportional to 7,913,807.70, 10,921,055.49 and 4,475,975.70 is: 6,176,846.95
Step by Step Solution
- Step 1: Write the proportion equation
7,913,807.70 : 10,921,055.49 = 4,475,975.70 : x - Step 2: Convert to fraction form
7,913,807.70/10,921,055.49 = 4,475,975.70/x - Step 3: Cross multiply
7,913,807.70x = 10,921,055.49 × 4,475,975.70 - Step 4: Simplify right side
7,913,807.70x = 48,882,378,991,591.59 - Step 5: Solve for x
x = 48,882,378,991,591.59/7,913,807.70 - Step 6: Final answer
x = 6,176,846.95
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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.