Finding the Fourth Proportional to 1,117,905.30, 1,542,580.74 and 634,374.18
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Solution
The fourth proportional to 1,117,905.30, 1,542,580.74 and 634,374.18 is: 875,363.41
Step by Step Solution
- Step 1: Write the proportion equation
1,117,905.30 : 1,542,580.74 = 634,374.18 : x - Step 2: Convert to fraction form
1,117,905.30/1,542,580.74 = 634,374.18/x - Step 3: Cross multiply
1,117,905.30x = 1,542,580.74 × 634,374.18 - Step 4: Simplify right side
1,117,905.30x = 978,573,392,021.29 - Step 5: Solve for x
x = 978,573,392,021.29/1,117,905.30 - Step 6: Final answer
x = 875,363.41
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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.