Finding the Fourth Proportional to 3,643,449.68, 5,028,403.86 and 2,115,556.76
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Solution
The fourth proportional to 3,643,449.68, 5,028,403.86 and 2,115,556.76 is: 2,919,725.73
Step by Step Solution
- Step 1: Write the proportion equation
3,643,449.68 : 5,028,403.86 = 2,115,556.76 : x - Step 2: Convert to fraction form
3,643,449.68/5,028,403.86 = 2,115,556.76/x - Step 3: Cross multiply
3,643,449.68x = 5,028,403.86 × 2,115,556.76 - Step 4: Simplify right side
3,643,449.68x = 10,637,873,778,033.09 - Step 5: Solve for x
x = 10,637,873,778,033.09/3,643,449.68 - Step 6: Final answer
x = 2,919,725.73
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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.