Finding the Fourth Proportional to 7,211,943.60, 9,952,174.08 and 3,948,699.12
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Solution
The fourth proportional to 7,211,943.60, 9,952,174.08 and 3,948,699.12 is: 5,449,036.10
Step by Step Solution
- Step 1: Write the proportion equation
7,211,943.60 : 9,952,174.08 = 3,948,699.12 : x - Step 2: Convert to fraction form
7,211,943.60/9,952,174.08 = 3,948,699.12/x - Step 3: Cross multiply
7,211,943.60x = 9,952,174.08 × 3,948,699.12 - Step 4: Simplify right side
7,211,943.60x = 39,298,141,031,782.81 - Step 5: Solve for x
x = 39,298,141,031,782.81/7,211,943.60 - Step 6: Final answer
x = 5,449,036.10
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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.