Finding the Fourth Proportional to 1,430,720.91, 2,146,458.65 and 831,105.68
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Solution
The fourth proportional to 1,430,720.91, 2,146,458.65 and 831,105.68 is: 1,246,877.67
Step by Step Solution
- Step 1: Write the proportion equation
1,430,720.91 : 2,146,458.65 = 831,105.68 : x - Step 2: Convert to fraction form
1,430,720.91/2,146,458.65 = 831,105.68/x - Step 3: Cross multiply
1,430,720.91x = 2,146,458.65 × 831,105.68 - Step 4: Simplify right side
1,430,720.91x = 1,783,933,961,012.31 - Step 5: Solve for x
x = 1,783,933,961,012.31/1,430,720.91 - Step 6: Final answer
x = 1,246,877.67
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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.