Finding the Fourth Proportional to 1,275,619.84, 1,913,422.08 and 389,155.84
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Solution
The fourth proportional to 1,275,619.84, 1,913,422.08 and 389,155.84 is: 583,731.42
Step by Step Solution
- Step 1: Write the proportion equation
1,275,619.84 : 1,913,422.08 = 389,155.84 : x - Step 2: Convert to fraction form
1,275,619.84/1,913,422.08 = 389,155.84/x - Step 3: Cross multiply
1,275,619.84x = 1,913,422.08 × 389,155.84 - Step 4: Simplify right side
1,275,619.84x = 744,619,376,816.95 - Step 5: Solve for x
x = 744,619,376,816.95/1,275,619.84 - Step 6: Final answer
x = 583,731.42
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.