Finding the Fourth Proportional to 681,251,749.47, 940,127,792.09 and 367,985,965.05
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Solution
The fourth proportional to 681,251,749.47, 940,127,792.09 and 367,985,965.05 is: 507,820,835.85
Step by Step Solution
- Step 1: Write the proportion equation
681,251,749.47 : 940,127,792.09 = 367,985,965.05 : x - Step 2: Convert to fraction form
681,251,749.47/940,127,792.09 = 367,985,965.05/x - Step 3: Cross multiply
681,251,749.47x = 940,127,792.09 × 367,985,965.05 - Step 4: Simplify right side
681,251,749.47x = 345,953,832,840,724,480 - Step 5: Solve for x
x = 345,953,832,840,724,480/681,251,749.47 - Step 6: Final answer
x = 507,820,835.85
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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.