Finding the Fourth Proportional to 716,000.16, 988,053.66 and 393,691.08
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Solution
The fourth proportional to 716,000.16, 988,053.66 and 393,691.08 is: 543,279.09
Step by Step Solution
- Step 1: Write the proportion equation
716,000.16 : 988,053.66 = 393,691.08 : x - Step 2: Convert to fraction form
716,000.16/988,053.66 = 393,691.08/x - Step 3: Cross multiply
716,000.16x = 988,053.66 × 393,691.08 - Step 4: Simplify right side
716,000.16x = 388,987,912,503.35 - Step 5: Solve for x
x = 388,987,912,503.35/716,000.16 - Step 6: Final answer
x = 543,279.09
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1.5x scale
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.