Finding the Fourth Proportional to 1,220,438.98, 1,684,996.32 and 785,051.02
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Solution
The fourth proportional to 1,220,438.98, 1,684,996.32 and 785,051.02 is: 1,083,878.92
Step by Step Solution
- Step 1: Write the proportion equation
1,220,438.98 : 1,684,996.32 = 785,051.02 : x - Step 2: Convert to fraction form
1,220,438.98/1,684,996.32 = 785,051.02/x - Step 3: Cross multiply
1,220,438.98x = 1,684,996.32 × 785,051.02 - Step 4: Simplify right side
1,220,438.98x = 1,322,808,079,712.25 - Step 5: Solve for x
x = 1,322,808,079,712.25/1,220,438.98 - Step 6: Final answer
x = 1,083,878.92
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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.