Finding the Fourth Proportional to 7,859,965.37, 11,789,948.05 and 2,180,189.68
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Solution
The fourth proportional to 7,859,965.37, 11,789,948.05 and 2,180,189.68 is: 3,270,284.52
Step by Step Solution
- Step 1: Write the proportion equation
7,859,965.37 : 11,789,948.05 = 2,180,189.68 : x - Step 2: Convert to fraction form
7,859,965.37/11,789,948.05 = 2,180,189.68/x - Step 3: Cross multiply
7,859,965.37x = 11,789,948.05 × 2,180,189.68 - Step 4: Simplify right side
7,859,965.37x = 25,704,323,031,420.78 - Step 5: Solve for x
x = 25,704,323,031,420.78/7,859,965.37 - Step 6: Final answer
x = 3,270,284.52
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.