Finding the Fourth Proportional to 5,390,438.70, 8,085,658.05 and 5,319,579.90
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Solution
The fourth proportional to 5,390,438.70, 8,085,658.05 and 5,319,579.90 is: 7,979,369.85
Step by Step Solution
- Step 1: Write the proportion equation
5,390,438.70 : 8,085,658.05 = 5,319,579.90 : x - Step 2: Convert to fraction form
5,390,438.70/8,085,658.05 = 5,319,579.90/x - Step 3: Cross multiply
5,390,438.70x = 8,085,658.05 × 5,319,579.90 - Step 4: Simplify right side
5,390,438.70x = 43,012,304,041,053.20 - Step 5: Solve for x
x = 43,012,304,041,053.20/5,390,438.70 - Step 6: Final answer
x = 7,979,369.85
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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.