Finding the Fourth Proportional to 770,335.09, 1,155,276.86 and 290,216.48
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Solution
The fourth proportional to 770,335.09, 1,155,276.86 and 290,216.48 is: 435,239.66
Step by Step Solution
- Step 1: Write the proportion equation
770,335.09 : 1,155,276.86 = 290,216.48 : x - Step 2: Convert to fraction form
770,335.09/1,155,276.86 = 290,216.48/x - Step 3: Cross multiply
770,335.09x = 1,155,276.86 × 290,216.48 - Step 4: Simplify right side
770,335.09x = 335,280,382,283.57 - Step 5: Solve for x
x = 335,280,382,283.57/770,335.09 - Step 6: Final answer
x = 435,239.66
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.