Finding the Fourth Proportional to 1,312,403.16, 1,811,115.99 and 708,791.16
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Solution
The fourth proportional to 1,312,403.16, 1,811,115.99 and 708,791.16 is: 978,131.60
Step by Step Solution
- Step 1: Write the proportion equation
1,312,403.16 : 1,811,115.99 = 708,791.16 : x - Step 2: Convert to fraction form
1,312,403.16/1,811,115.99 = 708,791.16/x - Step 3: Cross multiply
1,312,403.16x = 1,811,115.99 × 708,791.16 - Step 4: Simplify right side
1,312,403.16x = 1,283,703,003,446.65 - Step 5: Solve for x
x = 1,283,703,003,446.65/1,312,403.16 - Step 6: Final answer
x = 978,131.60
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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.