Finding the Fourth Proportional to 9,728,931.18, 13,425,398.09 and 5,377,737.23
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Solution
The fourth proportional to 9,728,931.18, 13,425,398.09 and 5,377,737.23 is: 7,420,986.10
Step by Step Solution
- Step 1: Write the proportion equation
9,728,931.18 : 13,425,398.09 = 5,377,737.23 : x - Step 2: Convert to fraction form
9,728,931.18/13,425,398.09 = 5,377,737.23/x - Step 3: Cross multiply
9,728,931.18x = 13,425,398.09 × 5,377,737.23 - Step 4: Simplify right side
9,728,931.18x = 72,198,263,042,148.22 - Step 5: Solve for x
x = 72,198,263,042,148.22/9,728,931.18 - Step 6: Final answer
x = 7,420,986.10
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1.5x scale
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.