Finding the Fourth Proportional to 716,385.18, 988,590.74 and 394,095.08
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Solution
The fourth proportional to 716,385.18, 988,590.74 and 394,095.08 is: 543,839.76
Step by Step Solution
- Step 1: Write the proportion equation
716,385.18 : 988,590.74 = 394,095.08 : x - Step 2: Convert to fraction form
716,385.18/988,590.74 = 394,095.08/x - Step 3: Cross multiply
716,385.18x = 988,590.74 × 394,095.08 - Step 4: Simplify right side
716,385.18x = 389,598,746,767.56 - Step 5: Solve for x
x = 389,598,746,767.56/716,385.18 - Step 6: Final answer
x = 543,839.76
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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.