Finding the Fourth Proportional to 1,549,988.29, 2,138,816.37 and 861,689.75
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Solution
The fourth proportional to 1,549,988.29, 2,138,816.37 and 861,689.75 is: 1,189,038.75
Step by Step Solution
- Step 1: Write the proportion equation
1,549,988.29 : 2,138,816.37 = 861,689.75 : x - Step 2: Convert to fraction form
1,549,988.29/2,138,816.37 = 861,689.75/x - Step 3: Cross multiply
1,549,988.29x = 2,138,816.37 × 861,689.75 - Step 4: Simplify right side
1,549,988.29x = 1,842,996,135,698.46 - Step 5: Solve for x
x = 1,842,996,135,698.46/1,549,988.29 - Step 6: Final answer
x = 1,189,038.75
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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.