Finding the Fourth Proportional to 2,121,969.18, 2,928,317.82 and 1,155,106.74
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Solution
The fourth proportional to 2,121,969.18, 2,928,317.82 and 1,155,106.74 is: 1,594,047.49
Step by Step Solution
- Step 1: Write the proportion equation
2,121,969.18 : 2,928,317.82 = 1,155,106.74 : x - Step 2: Convert to fraction form
2,121,969.18/2,928,317.82 = 1,155,106.74/x - Step 3: Cross multiply
2,121,969.18x = 2,928,317.82 × 1,155,106.74 - Step 4: Simplify right side
2,121,969.18x = 3,382,519,650,744.11 - Step 5: Solve for x
x = 3,382,519,650,744.11/2,121,969.18 - Step 6: Final answer
x = 1,594,047.49
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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.