Finding the Fourth Proportional to 2,153,868.36, 2,972,358.63 and 1,187,033.46
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Solution
The fourth proportional to 2,153,868.36, 2,972,358.63 and 1,187,033.46 is: 1,638,117.36
Step by Step Solution
- Step 1: Write the proportion equation
2,153,868.36 : 2,972,358.63 = 1,187,033.46 : x - Step 2: Convert to fraction form
2,153,868.36/2,972,358.63 = 1,187,033.46/x - Step 3: Cross multiply
2,153,868.36x = 2,972,358.63 × 1,187,033.46 - Step 4: Simplify right side
2,153,868.36x = 3,528,289,148,929.76 - Step 5: Solve for x
x = 3,528,289,148,929.76/2,153,868.36 - Step 6: Final answer
x = 1,638,117.36
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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.