Finding the Fourth Proportional to 940,369,873.84, 1,407,485,435.28 and 691,309,201.84
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Solution
The fourth proportional to 940,369,873.84, 1,407,485,435.28 and 691,309,201.84 is: 1,034,707,363.49
Step by Step Solution
- Step 1: Write the proportion equation
940,369,873.84 : 1,407,485,435.28 = 691,309,201.84 : x - Step 2: Convert to fraction form
940,369,873.84/1,407,485,435.28 = 691,309,201.84/x - Step 3: Cross multiply
940,369,873.84x = 1,407,485,435.28 × 691,309,201.84 - Step 4: Simplify right side
940,369,873.84x = 973,007,632,864,841,856 - Step 5: Solve for x
x = 973,007,632,864,841,856/940,369,873.84 - Step 6: Final answer
x = 1,034,707,363.49
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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.