Finding the Fourth Proportional to 643,710.66, 888,115.21 and 371,742.63
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Solution
The fourth proportional to 643,710.66, 888,115.21 and 371,742.63 is: 512,886.15
Step by Step Solution
- Step 1: Write the proportion equation
643,710.66 : 888,115.21 = 371,742.63 : x - Step 2: Convert to fraction form
643,710.66/888,115.21 = 371,742.63/x - Step 3: Cross multiply
643,710.66x = 888,115.21 × 371,742.63 - Step 4: Simplify right side
643,710.66x = 330,150,283,908.40 - Step 5: Solve for x
x = 330,150,283,908.40/643,710.66 - Step 6: Final answer
x = 512,886.15
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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.