Finding the Fourth Proportional to 1,408,449.56, 2,112,637.36 and 397,641.40
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Solution
The fourth proportional to 1,408,449.56, 2,112,637.36 and 397,641.40 is: 596,451.66
Step by Step Solution
- Step 1: Write the proportion equation
1,408,449.56 : 2,112,637.36 = 397,641.40 : x - Step 2: Convert to fraction form
1,408,449.56/2,112,637.36 = 397,641.40/x - Step 3: Cross multiply
1,408,449.56x = 2,112,637.36 × 397,641.40 - Step 4: Simplify right side
1,408,449.56x = 840,072,077,522.70 - Step 5: Solve for x
x = 840,072,077,522.70/1,408,449.56 - Step 6: Final answer
x = 596,451.66
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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.