Finding the Fourth Proportional to 804,818,665.60, 1,207,227,998.40 and 529,319,651.20
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Solution
The fourth proportional to 804,818,665.60, 1,207,227,998.40 and 529,319,651.20 is: 793,979,476.80
Step by Step Solution
- Step 1: Write the proportion equation
804,818,665.60 : 1,207,227,998.40 = 529,319,651.20 : x - Step 2: Convert to fraction form
804,818,665.60/1,207,227,998.40 = 529,319,651.20/x - Step 3: Cross multiply
804,818,665.60x = 1,207,227,998.40 × 529,319,651.20 - Step 4: Simplify right side
804,818,665.60x = 639,009,503,031,962,240 - Step 5: Solve for x
x = 639,009,503,031,962,240/804,818,665.60 - Step 6: Final answer
x = 793,979,476.80
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Double scale
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Similar ratio
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.