Finding the Fourth Proportional to 716,805.60, 989,184.23 and 394,508.78
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Solution
The fourth proportional to 716,805.60, 989,184.23 and 394,508.78 is: 544,417.99
Step by Step Solution
- Step 1: Write the proportion equation
716,805.60 : 989,184.23 = 394,508.78 : x - Step 2: Convert to fraction form
716,805.60/989,184.23 = 394,508.78/x - Step 3: Cross multiply
716,805.60x = 989,184.23 × 394,508.78 - Step 4: Simplify right side
716,805.60x = 390,241,863,772.54 - Step 5: Solve for x
x = 390,241,863,772.54/716,805.60 - Step 6: Final answer
x = 544,417.99
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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.