Finding the Fourth Proportional to 665,218.98, 917,730.18 and 491,206.14
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Solution
The fourth proportional to 665,218.98, 917,730.18 and 491,206.14 is: 677,663.62
Step by Step Solution
- Step 1: Write the proportion equation
665,218.98 : 917,730.18 = 491,206.14 : x - Step 2: Convert to fraction form
665,218.98/917,730.18 = 491,206.14/x - Step 3: Cross multiply
665,218.98x = 917,730.18 × 491,206.14 - Step 4: Simplify right side
665,218.98x = 450,794,699,279.31 - Step 5: Solve for x
x = 450,794,699,279.31/665,218.98 - Step 6: Final answer
x = 677,663.62
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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.