Finding the Fourth Proportional to 1,320,703.67, 1,980,958.62 and 421,904.05
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Solution
The fourth proportional to 1,320,703.67, 1,980,958.62 and 421,904.05 is: 632,825.12
Step by Step Solution
- Step 1: Write the proportion equation
1,320,703.67 : 1,980,958.62 = 421,904.05 : x - Step 2: Convert to fraction form
1,320,703.67/1,980,958.62 = 421,904.05/x - Step 3: Cross multiply
1,320,703.67x = 1,980,958.62 × 421,904.05 - Step 4: Simplify right side
1,320,703.67x = 835,774,464,660.41 - Step 5: Solve for x
x = 835,774,464,660.41/1,320,703.67 - Step 6: Final answer
x = 632,825.12
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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.