Finding the Fourth Proportional to 991,000.34, 1,366,279.12 and 715,126.67
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Solution
The fourth proportional to 991,000.34, 1,366,279.12 and 715,126.67 is: 985,935.72
Step by Step Solution
- Step 1: Write the proportion equation
991,000.34 : 1,366,279.12 = 715,126.67 : x - Step 2: Convert to fraction form
991,000.34/1,366,279.12 = 715,126.67/x - Step 3: Cross multiply
991,000.34x = 1,366,279.12 × 715,126.67 - Step 4: Simplify right side
991,000.34x = 977,062,637,376.13 - Step 5: Solve for x
x = 977,062,637,376.13/991,000.34 - Step 6: Final answer
x = 985,935.72
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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.