Finding the Fourth Proportional to 1,290,652.34, 1,781,101.69 and 717,680.21
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Solution
The fourth proportional to 1,290,652.34, 1,781,101.69 and 717,680.21 is: 990,399.50
Step by Step Solution
- Step 1: Write the proportion equation
1,290,652.34 : 1,781,101.69 = 717,680.21 : x - Step 2: Convert to fraction form
1,290,652.34/1,781,101.69 = 717,680.21/x - Step 3: Cross multiply
1,290,652.34x = 1,781,101.69 × 717,680.21 - Step 4: Simplify right side
1,290,652.34x = 1,278,261,424,210.85 - Step 5: Solve for x
x = 1,278,261,424,210.85/1,290,652.34 - Step 6: Final answer
x = 990,399.50
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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.