Finding the Fourth Proportional to 1,042,611.49, 1,438,376.20 and 634,386.07
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Solution
The fourth proportional to 1,042,611.49, 1,438,376.20 and 634,386.07 is: 875,192.57
Step by Step Solution
- Step 1: Write the proportion equation
1,042,611.49 : 1,438,376.20 = 634,386.07 : x - Step 2: Convert to fraction form
1,042,611.49/1,438,376.20 = 634,386.07/x - Step 3: Cross multiply
1,042,611.49x = 1,438,376.20 × 634,386.07 - Step 4: Simplify right side
1,042,611.49x = 912,485,824,699.53 - Step 5: Solve for x
x = 912,485,824,699.53/1,042,611.49 - Step 6: Final answer
x = 875,192.57
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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.