Finding the Fourth Proportional to 1,145,309.09, 1,580,665.95 and 661,878.18
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Solution
The fourth proportional to 1,145,309.09, 1,580,665.95 and 661,878.18 is: 913,472.46
Step by Step Solution
- Step 1: Write the proportion equation
1,145,309.09 : 1,580,665.95 = 661,878.18 : x - Step 2: Convert to fraction form
1,145,309.09/1,580,665.95 = 661,878.18/x - Step 3: Cross multiply
1,145,309.09x = 1,580,665.95 × 661,878.18 - Step 4: Simplify right side
1,145,309.09x = 1,046,208,302,173.97 - Step 5: Solve for x
x = 1,046,208,302,173.97/1,145,309.09 - Step 6: Final answer
x = 913,472.46
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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.