Finding the Fourth Proportional to 646,639.36, 892,569.12 and 417,203.08
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Solution
The fourth proportional to 646,639.36, 892,569.12 and 417,203.08 is: 575,873.68
Step by Step Solution
- Step 1: Write the proportion equation
646,639.36 : 892,569.12 = 417,203.08 : x - Step 2: Convert to fraction form
646,639.36/892,569.12 = 417,203.08/x - Step 3: Cross multiply
646,639.36x = 892,569.12 × 417,203.08 - Step 4: Simplify right side
646,639.36x = 372,382,585,976.89 - Step 5: Solve for x
x = 372,382,585,976.89/646,639.36 - Step 6: Final answer
x = 575,873.68
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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.