Finding the Fourth Proportional to 7,242,992.48, 9,995,281.80 and 3,979,842.68
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Solution
The fourth proportional to 7,242,992.48, 9,995,281.80 and 3,979,842.68 is: 5,492,156.62
Step by Step Solution
- Step 1: Write the proportion equation
7,242,992.48 : 9,995,281.80 = 3,979,842.68 : x - Step 2: Convert to fraction form
7,242,992.48/9,995,281.80 = 3,979,842.68/x - Step 3: Cross multiply
7,242,992.48x = 9,995,281.80 × 3,979,842.68 - Step 4: Simplify right side
7,242,992.48x = 39,779,649,106,267.23 - Step 5: Solve for x
x = 39,779,649,106,267.23/7,242,992.48 - Step 6: Final answer
x = 5,492,156.62
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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.