Finding the Fourth Proportional to 638,594.74, 881,278.49 and 390,276.92
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Solution
The fourth proportional to 638,594.74, 881,278.49 and 390,276.92 is: 538,592.99
Step by Step Solution
- Step 1: Write the proportion equation
638,594.74 : 881,278.49 = 390,276.92 : x - Step 2: Convert to fraction form
638,594.74/881,278.49 = 390,276.92/x - Step 3: Cross multiply
638,594.74x = 881,278.49 × 390,276.92 - Step 4: Simplify right side
638,594.74x = 343,942,652,788.07 - Step 5: Solve for x
x = 343,942,652,788.07/638,594.74 - Step 6: Final answer
x = 538,592.99
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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.