Finding the Fourth Proportional to 1,163,988.29, 1,606,280.05 and 728,645.74
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Solution
The fourth proportional to 1,163,988.29, 1,606,280.05 and 728,645.74 is: 1,005,516.23
Step by Step Solution
- Step 1: Write the proportion equation
1,163,988.29 : 1,606,280.05 = 728,645.74 : x - Step 2: Convert to fraction form
1,163,988.29/1,606,280.05 = 728,645.74/x - Step 3: Cross multiply
1,163,988.29x = 1,606,280.05 × 728,645.74 - Step 4: Simplify right side
1,163,988.29x = 1,170,409,121,609.92 - Step 5: Solve for x
x = 1,170,409,121,609.92/1,163,988.29 - Step 6: Final answer
x = 1,005,516.23
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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.