Finding the Fourth Proportional to 638,454.14, 881,073.50 and 351,984.48
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Solution
The fourth proportional to 638,454.14, 881,073.50 and 351,984.48 is: 485,742.32
Step by Step Solution
- Step 1: Write the proportion equation
638,454.14 : 881,073.50 = 351,984.48 : x - Step 2: Convert to fraction form
638,454.14/881,073.50 = 351,984.48/x - Step 3: Cross multiply
638,454.14x = 881,073.50 × 351,984.48 - Step 4: Simplify right side
638,454.14x = 310,124,197,739.28 - Step 5: Solve for x
x = 310,124,197,739.28/638,454.14 - Step 6: Final answer
x = 485,742.32
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1.5x scale
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.