Finding the Fourth Proportional to 2,121,987.45, 2,928,342.99 and 1,155,125.08
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Solution
The fourth proportional to 2,121,987.45, 2,928,342.99 and 1,155,125.08 is: 1,594,072.78
Step by Step Solution
- Step 1: Write the proportion equation
2,121,987.45 : 2,928,342.99 = 1,155,125.08 : x - Step 2: Convert to fraction form
2,121,987.45/2,928,342.99 = 1,155,125.08/x - Step 3: Cross multiply
2,121,987.45x = 2,928,342.99 × 1,155,125.08 - Step 4: Simplify right side
2,121,987.45x = 3,382,602,430,591.19 - Step 5: Solve for x
x = 3,382,602,430,591.19/2,121,987.45 - Step 6: Final answer
x = 1,594,072.78
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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.