Finding the Fourth Proportional to 1,189,618.81, 1,641,630.11 and 645,742.67
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Solution
The fourth proportional to 1,189,618.81, 1,641,630.11 and 645,742.67 is: 891,101.08
Step by Step Solution
- Step 1: Write the proportion equation
1,189,618.81 : 1,641,630.11 = 645,742.67 : x - Step 2: Convert to fraction form
1,189,618.81/1,641,630.11 = 645,742.67/x - Step 3: Cross multiply
1,189,618.81x = 1,641,630.11 × 645,742.67 - Step 4: Simplify right side
1,189,618.81x = 1,060,070,598,946.93 - Step 5: Solve for x
x = 1,060,070,598,946.93/1,189,618.81 - Step 6: Final answer
x = 891,101.08
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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.