Finding the Fourth Proportional to 716,423.60, 988,670.99 and 389,743.73
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Solution
The fourth proportional to 716,423.60, 988,670.99 and 389,743.73 is: 537,849.84
Step by Step Solution
- Step 1: Write the proportion equation
716,423.60 : 988,670.99 = 389,743.73 : x - Step 2: Convert to fraction form
716,423.60/988,670.99 = 389,743.73/x - Step 3: Cross multiply
716,423.60x = 988,670.99 × 389,743.73 - Step 4: Simplify right side
716,423.60x = 385,328,315,222.72 - Step 5: Solve for x
x = 385,328,315,222.72/716,423.60 - Step 6: Final answer
x = 537,849.84
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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.