Finding the Fourth Proportional to 1,319,937.32, 1,820,573.21 and 1,211,391.05
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Solution
The fourth proportional to 1,319,937.32, 1,820,573.21 and 1,211,391.05 is: 1,670,856.68
Step by Step Solution
- Step 1: Write the proportion equation
1,319,937.32 : 1,820,573.21 = 1,211,391.05 : x - Step 2: Convert to fraction form
1,319,937.32/1,820,573.21 = 1,211,391.05/x - Step 3: Cross multiply
1,319,937.32x = 1,820,573.21 × 1,211,391.05 - Step 4: Simplify right side
1,319,937.32x = 2,205,426,086,389.38 - Step 5: Solve for x
x = 2,205,426,086,389.38/1,319,937.32 - Step 6: Final answer
x = 1,670,856.68
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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.