Finding the Fourth Proportional to 8,139,539.36, 12,193,346.76 and 4,720,643.54
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Solution
The fourth proportional to 8,139,539.36, 12,193,346.76 and 4,720,643.54 is: 7,071,707.75
Step by Step Solution
- Step 1: Write the proportion equation
8,139,539.36 : 12,193,346.76 = 4,720,643.54 : x - Step 2: Convert to fraction form
8,139,539.36/12,193,346.76 = 4,720,643.54/x - Step 3: Cross multiply
8,139,539.36x = 12,193,346.76 × 4,720,643.54 - Step 4: Simplify right side
8,139,539.36x = 57,560,443,613,573.93 - Step 5: Solve for x
x = 57,560,443,613,573.93/8,139,539.36 - Step 6: Final answer
x = 7,071,707.75
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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.