Finding the Fourth Proportional to 1,288,899.06, 1,778,708.91 and 708,129.68
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Solution
The fourth proportional to 1,288,899.06, 1,778,708.91 and 708,129.68 is: 977,234.45
Step by Step Solution
- Step 1: Write the proportion equation
1,288,899.06 : 1,778,708.91 = 708,129.68 : x - Step 2: Convert to fraction form
1,288,899.06/1,778,708.91 = 708,129.68/x - Step 3: Cross multiply
1,288,899.06x = 1,778,708.91 × 708,129.68 - Step 4: Simplify right side
1,288,899.06x = 1,259,556,562,357.90 - Step 5: Solve for x
x = 1,259,556,562,357.90/1,288,899.06 - Step 6: Final answer
x = 977,234.45
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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.