Finding the Fourth Proportional to 716,079.53, 988,176.84 and 393,790.52
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Solution
The fourth proportional to 716,079.53, 988,176.84 and 393,790.52 is: 543,423.82
Step by Step Solution
- Step 1: Write the proportion equation
716,079.53 : 988,176.84 = 393,790.52 : x - Step 2: Convert to fraction form
716,079.53/988,176.84 = 393,790.52/x - Step 3: Cross multiply
716,079.53x = 988,176.84 × 393,790.52 - Step 4: Simplify right side
716,079.53x = 389,134,671,675.56 - Step 5: Solve for x
x = 389,134,671,675.56/716,079.53 - Step 6: Final answer
x = 543,423.82
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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.