Finding the Fourth Proportional to 2,153,874.48, 2,972,366.88 and 1,187,040.08
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Solution
The fourth proportional to 2,153,874.48, 2,972,366.88 and 1,187,040.08 is: 1,638,126.39
Step by Step Solution
- Step 1: Write the proportion equation
2,153,874.48 : 2,972,366.88 = 1,187,040.08 : x - Step 2: Convert to fraction form
2,153,874.48/2,972,366.88 = 1,187,040.08/x - Step 3: Cross multiply
2,153,874.48x = 2,972,366.88 × 1,187,040.08 - Step 4: Simplify right side
2,153,874.48x = 3,528,318,619,024.55 - Step 5: Solve for x
x = 3,528,318,619,024.55/2,153,874.48 - Step 6: Final answer
x = 1,638,126.39
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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.