Finding the Fourth Proportional to 1,225,306.24, 1,689,749.10 and 811,187.46
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Solution
The fourth proportional to 1,225,306.24, 1,689,749.10 and 811,187.46 is: 1,118,661.80
Step by Step Solution
- Step 1: Write the proportion equation
1,225,306.24 : 1,689,749.10 = 811,187.46 : x - Step 2: Convert to fraction form
1,225,306.24/1,689,749.10 = 811,187.46/x - Step 3: Cross multiply
1,225,306.24x = 1,689,749.10 × 811,187.46 - Step 4: Simplify right side
1,225,306.24x = 1,370,703,280,466.29 - Step 5: Solve for x
x = 1,370,703,280,466.29/1,225,306.24 - Step 6: Final answer
x = 1,118,661.80
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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.