Finding the Fourth Proportional to 7,889,720.80, 11,834,581.20 and 5,202,335.20
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Solution
The fourth proportional to 7,889,720.80, 11,834,581.20 and 5,202,335.20 is: 7,803,502.80
Step by Step Solution
- Step 1: Write the proportion equation
7,889,720.80 : 11,834,581.20 = 5,202,335.20 : x - Step 2: Convert to fraction form
7,889,720.80/11,834,581.20 = 5,202,335.20/x - Step 3: Cross multiply
7,889,720.80x = 11,834,581.20 × 5,202,335.20 - Step 4: Simplify right side
7,889,720.80x = 61,567,458,354,018.24 - Step 5: Solve for x
x = 61,567,458,354,018.24/7,889,720.80 - Step 6: Final answer
x = 7,803,502.80
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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.