Finding the Fourth Proportional to 7,887,340.80, 11,831,011.20 and 2,837,995.20
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Solution
The fourth proportional to 7,887,340.80, 11,831,011.20 and 2,837,995.20 is: 4,256,992.80
Step by Step Solution
- Step 1: Write the proportion equation
7,887,340.80 : 11,831,011.20 = 2,837,995.20 : x - Step 2: Convert to fraction form
7,887,340.80/11,831,011.20 = 2,837,995.20/x - Step 3: Cross multiply
7,887,340.80x = 11,831,011.20 × 2,837,995.20 - Step 4: Simplify right side
7,887,340.80x = 33,576,352,996,746.24 - Step 5: Solve for x
x = 33,576,352,996,746.24/7,887,340.80 - Step 6: Final answer
x = 4,256,992.80
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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.