Finding the Fourth Proportional to 2,138,130.80, 2,950,621.20 and 1,171,295.88
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Solution
The fourth proportional to 2,138,130.80, 2,950,621.20 and 1,171,295.88 is: 1,616,388.70
Step by Step Solution
- Step 1: Write the proportion equation
2,138,130.80 : 2,950,621.20 = 1,171,295.88 : x - Step 2: Convert to fraction form
2,138,130.80/2,950,621.20 = 1,171,295.88/x - Step 3: Cross multiply
2,138,130.80x = 2,950,621.20 × 1,171,295.88 - Step 4: Simplify right side
2,138,130.80x = 3,456,050,455,000.66 - Step 5: Solve for x
x = 3,456,050,455,000.66/2,138,130.80 - Step 6: Final answer
x = 1,616,388.70
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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.