Finding the Fourth Proportional to 1,565,705.10, 2,160,636.44 and 921,166.80
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Solution
The fourth proportional to 1,565,705.10, 2,160,636.44 and 921,166.80 is: 1,271,188.65
Step by Step Solution
- Step 1: Write the proportion equation
1,565,705.10 : 2,160,636.44 = 921,166.80 : x - Step 2: Convert to fraction form
1,565,705.10/2,160,636.44 = 921,166.80/x - Step 3: Cross multiply
1,565,705.10x = 2,160,636.44 × 921,166.80 - Step 4: Simplify right side
1,565,705.10x = 1,990,306,555,398.19 - Step 5: Solve for x
x = 1,990,306,555,398.19/1,565,705.10 - Step 6: Final answer
x = 1,271,188.65
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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.