Finding the Fourth Proportional to 1,490,489.58, 2,056,883.34 and 811,430.94
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Solution
The fourth proportional to 1,490,489.58, 2,056,883.34 and 811,430.94 is: 1,119,778.90
Step by Step Solution
- Step 1: Write the proportion equation
1,490,489.58 : 2,056,883.34 = 811,430.94 : x - Step 2: Convert to fraction form
1,490,489.58/2,056,883.34 = 811,430.94/x - Step 3: Cross multiply
1,490,489.58x = 2,056,883.34 × 811,430.94 - Step 4: Simplify right side
1,490,489.58x = 1,669,018,782,046.54 - Step 5: Solve for x
x = 1,669,018,782,046.54/1,490,489.58 - Step 6: Final answer
x = 1,119,778.90
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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.