Finding the Fourth Proportional to 1,312,781.31, 1,811,593.42 and 724,104.08
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Solution
The fourth proportional to 1,312,781.31, 1,811,593.42 and 724,104.08 is: 999,238.92
Step by Step Solution
- Step 1: Write the proportion equation
1,312,781.31 : 1,811,593.42 = 724,104.08 : x - Step 2: Convert to fraction form
1,312,781.31/1,811,593.42 = 724,104.08/x - Step 3: Cross multiply
1,312,781.31x = 1,811,593.42 × 724,104.08 - Step 4: Simplify right side
1,312,781.31x = 1,311,782,177,665.19 - Step 5: Solve for x
x = 1,311,782,177,665.19/1,312,781.31 - Step 6: Final answer
x = 999,238.92
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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.