Finding the Fourth Proportional to 1,279,411,629.75, 1,919,117,444.63 and 310,063,245.75
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Solution
The fourth proportional to 1,279,411,629.75, 1,919,117,444.63 and 310,063,245.75 is: 465,094,868.63
Step by Step Solution
- Step 1: Write the proportion equation
1,279,411,629.75 : 1,919,117,444.63 = 310,063,245.75 : x - Step 2: Convert to fraction form
1,279,411,629.75/1,919,117,444.63 = 310,063,245.75/x - Step 3: Cross multiply
1,279,411,629.75x = 1,919,117,444.63 × 310,063,245.75 - Step 4: Simplify right side
1,279,411,629.75x = 595,047,783,855,873,408 - Step 5: Solve for x
x = 595,047,783,855,873,408/1,279,411,629.75 - Step 6: Final answer
x = 465,094,868.63
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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.