Finding the Fourth Proportional to 3,127,173.12, 4,315,507.20 and 1,696,389.12
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Solution
The fourth proportional to 3,127,173.12, 4,315,507.20 and 1,696,389.12 is: 2,341,021.49
Step by Step Solution
- Step 1: Write the proportion equation
3,127,173.12 : 4,315,507.20 = 1,696,389.12 : x - Step 2: Convert to fraction form
3,127,173.12/4,315,507.20 = 1,696,389.12/x - Step 3: Cross multiply
3,127,173.12x = 4,315,507.20 × 1,696,389.12 - Step 4: Simplify right side
3,127,173.12x = 7,320,779,461,361.67 - Step 5: Solve for x
x = 7,320,779,461,361.67/3,127,173.12 - Step 6: Final answer
x = 2,341,021.49
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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.