Finding the Fourth Proportional to 1,129,884.79, 1,559,337.17 and 639,941.46
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Solution
The fourth proportional to 1,129,884.79, 1,559,337.17 and 639,941.46 is: 883,173.68
Step by Step Solution
- Step 1: Write the proportion equation
1,129,884.79 : 1,559,337.17 = 639,941.46 : x - Step 2: Convert to fraction form
1,129,884.79/1,559,337.17 = 639,941.46/x - Step 3: Cross multiply
1,129,884.79x = 1,559,337.17 × 639,941.46 - Step 4: Simplify right side
1,129,884.79x = 997,884,505,202.07 - Step 5: Solve for x
x = 997,884,505,202.07/1,129,884.79 - Step 6: Final answer
x = 883,173.68
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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.