Finding the Fourth Proportional to 2,165,853.92, 2,988,913.80 and 1,185,776.60
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Solution
The fourth proportional to 2,165,853.92, 2,988,913.80 and 1,185,776.60 is: 1,636,391.08
Step by Step Solution
- Step 1: Write the proportion equation
2,165,853.92 : 2,988,913.80 = 1,185,776.60 : x - Step 2: Convert to fraction form
2,165,853.92/2,988,913.80 = 1,185,776.60/x - Step 3: Cross multiply
2,165,853.92x = 2,988,913.80 × 1,185,776.60 - Step 4: Simplify right side
2,165,853.92x = 3,544,184,043,457.08 - Step 5: Solve for x
x = 3,544,184,043,457.08/2,165,853.92 - Step 6: Final answer
x = 1,636,391.08
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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.