Finding the Fourth Proportional to 1,965,970.62, 2,711,641.91 and 1,312,267.05
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Solution
The fourth proportional to 1,965,970.62, 2,711,641.91 and 1,312,267.05 is: 1,809,995.68
Step by Step Solution
- Step 1: Write the proportion equation
1,965,970.62 : 2,711,641.91 = 1,312,267.05 : x - Step 2: Convert to fraction form
1,965,970.62/2,711,641.91 = 1,312,267.05/x - Step 3: Cross multiply
1,965,970.62x = 2,711,641.91 × 1,312,267.05 - Step 4: Simplify right side
1,965,970.62x = 3,558,398,329,892.07 - Step 5: Solve for x
x = 3,558,398,329,892.07/1,965,970.62 - Step 6: Final answer
x = 1,809,995.68
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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.