Finding the Fourth Proportional to 7,709,990.40, 11,553,926.40 and 5,672,332.80
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Solution
The fourth proportional to 7,709,990.40, 11,553,926.40 and 5,672,332.80 is: 8,500,362.81
Step by Step Solution
- Step 1: Write the proportion equation
7,709,990.40 : 11,553,926.40 = 5,672,332.80 : x - Step 2: Convert to fraction form
7,709,990.40/11,553,926.40 = 5,672,332.80/x - Step 3: Cross multiply
7,709,990.40x = 11,553,926.40 × 5,672,332.80 - Step 4: Simplify right side
7,709,990.40x = 65,537,715,687,505.92 - Step 5: Solve for x
x = 65,537,715,687,505.92/7,709,990.40 - Step 6: Final answer
x = 8,500,362.81
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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.