Finding the Fourth Proportional to 7,998,412.86, 11,998,863.54 and 2,605,807.98
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Solution
The fourth proportional to 7,998,412.86, 11,998,863.54 and 2,605,807.98 is: 3,909,117.33
Step by Step Solution
- Step 1: Write the proportion equation
7,998,412.86 : 11,998,863.54 = 2,605,807.98 : x - Step 2: Convert to fraction form
7,998,412.86/11,998,863.54 = 2,605,807.98/x - Step 3: Cross multiply
7,998,412.86x = 11,998,863.54 × 2,605,807.98 - Step 4: Simplify right side
7,998,412.86x = 31,266,734,363,463.05 - Step 5: Solve for x
x = 31,266,734,363,463.05/7,998,412.86 - Step 6: Final answer
x = 3,909,117.33
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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.