Finding the Fourth Proportional to 1,320,701.67, 1,980,955.62 and 421,902.05
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Solution
The fourth proportional to 1,320,701.67, 1,980,955.62 and 421,902.05 is: 632,822.12
Step by Step Solution
- Step 1: Write the proportion equation
1,320,701.67 : 1,980,955.62 = 421,902.05 : x - Step 2: Convert to fraction form
1,320,701.67/1,980,955.62 = 421,902.05/x - Step 3: Cross multiply
1,320,701.67x = 1,980,955.62 × 421,902.05 - Step 4: Simplify right side
1,320,701.67x = 835,769,227,132.24 - Step 5: Solve for x
x = 835,769,227,132.24/1,320,701.67 - Step 6: Final answer
x = 632,822.12
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.