Finding the Fourth Proportional to 1,999,528.84, 2,756,478.90 and 1,425,572.92
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Solution
The fourth proportional to 1,999,528.84, 2,756,478.90 and 1,425,572.92 is: 1,965,243.81
Step by Step Solution
- Step 1: Write the proportion equation
1,999,528.84 : 2,756,478.90 = 1,425,572.92 : x - Step 2: Convert to fraction form
1,999,528.84/2,756,478.90 = 1,425,572.92/x - Step 3: Cross multiply
1,999,528.84x = 2,756,478.90 × 1,425,572.92 - Step 4: Simplify right side
1,999,528.84x = 3,929,561,674,391.39 - Step 5: Solve for x
x = 3,929,561,674,391.39/1,999,528.84 - Step 6: Final answer
x = 1,965,243.81
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1.5x scale
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.