Finding the Fourth Proportional to 1,378,980.49, 2,068,470.75 and 432,425.02
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Solution
The fourth proportional to 1,378,980.49, 2,068,470.75 and 432,425.02 is: 648,637.53
Step by Step Solution
- Step 1: Write the proportion equation
1,378,980.49 : 2,068,470.75 = 432,425.02 : x - Step 2: Convert to fraction form
1,378,980.49/2,068,470.75 = 432,425.02/x - Step 3: Cross multiply
1,378,980.49x = 2,068,470.75 × 432,425.02 - Step 4: Simplify right side
1,378,980.49x = 894,458,505,438.17 - Step 5: Solve for x
x = 894,458,505,438.17/1,378,980.49 - Step 6: Final answer
x = 648,637.53
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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.