Finding the Fourth Proportional to 643,853.41, 888,558.05 and 357,378.28
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Solution
The fourth proportional to 643,853.41, 888,558.05 and 357,378.28 is: 493,204.42
Step by Step Solution
- Step 1: Write the proportion equation
643,853.41 : 888,558.05 = 357,378.28 : x - Step 2: Convert to fraction form
643,853.41/888,558.05 = 357,378.28/x - Step 3: Cross multiply
643,853.41x = 888,558.05 × 357,378.28 - Step 4: Simplify right side
643,853.41x = 317,551,346,261.21 - Step 5: Solve for x
x = 317,551,346,261.21/643,853.41 - Step 6: Final answer
x = 493,204.42
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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.