Finding the Fourth Proportional to 1,247,543.80, 1,721,419.50 and 703,655.80
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Solution
The fourth proportional to 1,247,543.80, 1,721,419.50 and 703,655.80 is: 970,937.31
Step by Step Solution
- Step 1: Write the proportion equation
1,247,543.80 : 1,721,419.50 = 703,655.80 : x - Step 2: Convert to fraction form
1,247,543.80/1,721,419.50 = 703,655.80/x - Step 3: Cross multiply
1,247,543.80x = 1,721,419.50 × 703,655.80 - Step 4: Simplify right side
1,247,543.80x = 1,211,286,815,408.10 - Step 5: Solve for x
x = 1,211,286,815,408.10/1,247,543.80 - Step 6: Final answer
x = 970,937.31
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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.