Finding the Fourth Proportional to 5,638,857.12, 7,775,740.76 and 3,346,574.92
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Solution
The fourth proportional to 5,638,857.12, 7,775,740.76 and 3,346,574.92 is: 4,614,782.47
Step by Step Solution
- Step 1: Write the proportion equation
5,638,857.12 : 7,775,740.76 = 3,346,574.92 : x - Step 2: Convert to fraction form
5,638,857.12/7,775,740.76 = 3,346,574.92/x - Step 3: Cross multiply
5,638,857.12x = 7,775,740.76 × 3,346,574.92 - Step 4: Simplify right side
5,638,857.12x = 26,022,099,011,837.74 - Step 5: Solve for x
x = 26,022,099,011,837.74/5,638,857.12 - Step 6: Final answer
x = 4,614,782.47
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1.5x scale
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.