Finding the Fourth Proportional to 1,289,213.23, 1,779,143.91 and 708,472.48
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Solution
The fourth proportional to 1,289,213.23, 1,779,143.91 and 708,472.48 is: 977,708.32
Step by Step Solution
- Step 1: Write the proportion equation
1,289,213.23 : 1,779,143.91 = 708,472.48 : x - Step 2: Convert to fraction form
1,289,213.23/1,779,143.91 = 708,472.48/x - Step 3: Cross multiply
1,289,213.23x = 1,779,143.91 × 708,472.48 - Step 4: Simplify right side
1,289,213.23x = 1,260,474,498,194.60 - Step 5: Solve for x
x = 1,260,474,498,194.60/1,289,213.23 - Step 6: Final answer
x = 977,708.32
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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.