Finding the Fourth Proportional to 1,128,433, 1,557,207.13 and 686,741.92
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Solution
The fourth proportional to 1,128,433, 1,557,207.13 and 686,741.92 is: 947,685.34
Step by Step Solution
- Step 1: Write the proportion equation
1,128,433 : 1,557,207.13 = 686,741.92 : x - Step 2: Convert to fraction form
1,128,433/1,557,207.13 = 686,741.92/x - Step 3: Cross multiply
1,128,433x = 1,557,207.13 × 686,741.92 - Step 4: Simplify right side
1,128,433x = 1,069,399,414,293.89 - Step 5: Solve for x
x = 1,069,399,414,293.89/1,128,433 - Step 6: Final answer
x = 947,685.34
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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.