Finding the Fourth Proportional to 1,405,437.16, 2,108,117.47 and 394,567.49
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Solution
The fourth proportional to 1,405,437.16, 2,108,117.47 and 394,567.49 is: 591,840.49
Step by Step Solution
- Step 1: Write the proportion equation
1,405,437.16 : 2,108,117.47 = 394,567.49 : x - Step 2: Convert to fraction form
1,405,437.16/2,108,117.47 = 394,567.49/x - Step 3: Cross multiply
1,405,437.16x = 2,108,117.47 × 394,567.49 - Step 4: Simplify right side
1,405,437.16x = 831,794,618,763.05 - Step 5: Solve for x
x = 831,794,618,763.05/1,405,437.16 - Step 6: Final answer
x = 591,840.49
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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.