Finding the Fourth Proportional to 804,818,644.80, 1,207,227,967.20 and 774,207,643.20
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Solution
The fourth proportional to 804,818,644.80, 1,207,227,967.20 and 774,207,643.20 is: 1,161,311,464.80
Step by Step Solution
- Step 1: Write the proportion equation
804,818,644.80 : 1,207,227,967.20 = 774,207,643.20 : x - Step 2: Convert to fraction form
804,818,644.80/1,207,227,967.20 = 774,207,643.20/x - Step 3: Cross multiply
804,818,644.80x = 1,207,227,967.20 × 774,207,643.20 - Step 4: Simplify right side
804,818,644.80x = 934,645,119,291,038,976 - Step 5: Solve for x
x = 934,645,119,291,038,976/804,818,644.80 - Step 6: Final answer
x = 1,161,311,464.80
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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.