Finding the Fourth Proportional to 1,438,538.76, 1,985,248.26 and 826,890.12
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Solution
The fourth proportional to 1,438,538.76, 1,985,248.26 and 826,890.12 is: 1,141,145.60
Step by Step Solution
- Step 1: Write the proportion equation
1,438,538.76 : 1,985,248.26 = 826,890.12 : x - Step 2: Convert to fraction form
1,438,538.76/1,985,248.26 = 826,890.12/x - Step 3: Cross multiply
1,438,538.76x = 1,985,248.26 × 826,890.12 - Step 4: Simplify right side
1,438,538.76x = 1,641,582,171,941.19 - Step 5: Solve for x
x = 1,641,582,171,941.19/1,438,538.76 - Step 6: Final answer
x = 1,141,145.60
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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.