Finding the Fourth Proportional to 19,487,231.20, 29,230,846.80 and 5,110,271.20
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Solution
The fourth proportional to 19,487,231.20, 29,230,846.80 and 5,110,271.20 is: 7,665,406.80
Step by Step Solution
- Step 1: Write the proportion equation
19,487,231.20 : 29,230,846.80 = 5,110,271.20 : x - Step 2: Convert to fraction form
19,487,231.20/29,230,846.80 = 5,110,271.20/x - Step 3: Cross multiply
19,487,231.20x = 29,230,846.80 × 5,110,271.20 - Step 4: Simplify right side
19,487,231.20x = 149,377,554,553,652.16 - Step 5: Solve for x
x = 149,377,554,553,652.16/19,487,231.20 - Step 6: Final answer
x = 7,665,406.80
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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.