Finding the Fourth Proportional to 3,420,753.30, 4,721,140.35 and 1,970,166.42
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Solution
The fourth proportional to 3,420,753.30, 4,721,140.35 and 1,970,166.42 is: 2,719,118.09
Step by Step Solution
- Step 1: Write the proportion equation
3,420,753.30 : 4,721,140.35 = 1,970,166.42 : x - Step 2: Convert to fraction form
3,420,753.30/4,721,140.35 = 1,970,166.42/x - Step 3: Cross multiply
3,420,753.30x = 4,721,140.35 × 1,970,166.42 - Step 4: Simplify right side
3,420,753.30x = 9,301,432,181,677.05 - Step 5: Solve for x
x = 9,301,432,181,677.05/3,420,753.30 - Step 6: Final answer
x = 2,719,118.09
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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.