Finding the Fourth Proportional to 2,909,932.51, 4,015,708.05 and 1,686,947.08
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Solution
The fourth proportional to 2,909,932.51, 4,015,708.05 and 1,686,947.08 is: 2,327,987.66
Step by Step Solution
- Step 1: Write the proportion equation
2,909,932.51 : 4,015,708.05 = 1,686,947.08 : x - Step 2: Convert to fraction form
2,909,932.51/4,015,708.05 = 1,686,947.08/x - Step 3: Cross multiply
2,909,932.51x = 4,015,708.05 × 1,686,947.08 - Step 4: Simplify right side
2,909,932.51x = 6,774,286,969,079.99 - Step 5: Solve for x
x = 6,774,286,969,079.99/2,909,932.51 - Step 6: Final answer
x = 2,327,987.66
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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.