Finding the Fourth Proportional to 1,931,393.76, 2,665,813.32 and 1,319,794.08
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Solution
The fourth proportional to 1,931,393.76, 2,665,813.32 and 1,319,794.08 is: 1,821,650.62
Step by Step Solution
- Step 1: Write the proportion equation
1,931,393.76 : 2,665,813.32 = 1,319,794.08 : x - Step 2: Convert to fraction form
1,931,393.76/2,665,813.32 = 1,319,794.08/x - Step 3: Cross multiply
1,931,393.76x = 2,665,813.32 × 1,319,794.08 - Step 4: Simplify right side
1,931,393.76x = 3,518,324,638,121.15 - Step 5: Solve for x
x = 3,518,324,638,121.15/1,931,393.76 - Step 6: Final answer
x = 1,821,650.62
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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.