Finding the Fourth Proportional to 1,915,969.28, 2,643,987.84 and 1,056,519.68
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Solution
The fourth proportional to 1,915,969.28, 2,643,987.84 and 1,056,519.68 is: 1,457,969.72
Step by Step Solution
- Step 1: Write the proportion equation
1,915,969.28 : 2,643,987.84 = 1,056,519.68 : x - Step 2: Convert to fraction form
1,915,969.28/2,643,987.84 = 1,056,519.68/x - Step 3: Cross multiply
1,915,969.28x = 2,643,987.84 × 1,056,519.68 - Step 4: Simplify right side
1,915,969.28x = 2,793,425,186,640.69 - Step 5: Solve for x
x = 2,793,425,186,640.69/1,915,969.28 - Step 6: Final answer
x = 1,457,969.72
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.