Finding the Fourth Proportional to 1,442,107.60, 1,989,507.15 and 830,113.92
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Solution
The fourth proportional to 1,442,107.60, 1,989,507.15 and 830,113.92 is: 1,145,211.07
Step by Step Solution
- Step 1: Write the proportion equation
1,442,107.60 : 1,989,507.15 = 830,113.92 : x - Step 2: Convert to fraction form
1,442,107.60/1,989,507.15 = 830,113.92/x - Step 3: Cross multiply
1,442,107.60x = 1,989,507.15 × 830,113.92 - Step 4: Simplify right side
1,442,107.60x = 1,651,517,579,154.53 - Step 5: Solve for x
x = 1,651,517,579,154.53/1,442,107.60 - Step 6: Final answer
x = 1,145,211.07
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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.