Finding the Fourth Proportional to 638,089.21, 880,581.63 and 351,627.76
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Solution
The fourth proportional to 638,089.21, 880,581.63 and 351,627.76 is: 485,256.51
Step by Step Solution
- Step 1: Write the proportion equation
638,089.21 : 880,581.63 = 351,627.76 : x - Step 2: Convert to fraction form
638,089.21/880,581.63 = 351,627.76/x - Step 3: Cross multiply
638,089.21x = 880,581.63 × 351,627.76 - Step 4: Simplify right side
638,089.21x = 309,636,946,054.05 - Step 5: Solve for x
x = 309,636,946,054.05/638,089.21 - Step 6: Final answer
x = 485,256.51
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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.