Finding the Fourth Proportional to 3,115,565.36, 4,299,486.14 and 1,720,129.68
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Solution
The fourth proportional to 3,115,565.36, 4,299,486.14 and 1,720,129.68 is: 2,373,782.24
Step by Step Solution
- Step 1: Write the proportion equation
3,115,565.36 : 4,299,486.14 = 1,720,129.68 : x - Step 2: Convert to fraction form
3,115,565.36/4,299,486.14 = 1,720,129.68/x - Step 3: Cross multiply
3,115,565.36x = 4,299,486.14 × 1,720,129.68 - Step 4: Simplify right side
3,115,565.36x = 7,395,673,709,561.99 - Step 5: Solve for x
x = 7,395,673,709,561.99/3,115,565.36 - Step 6: Final answer
x = 2,373,782.24
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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.