Finding the Fourth Proportional to 1,279,411,626.75, 1,919,117,440.13 and 310,063,242.75
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Solution
The fourth proportional to 1,279,411,626.75, 1,919,117,440.13 and 310,063,242.75 is: 465,094,864.13
Step by Step Solution
- Step 1: Write the proportion equation
1,279,411,626.75 : 1,919,117,440.13 = 310,063,242.75 : x - Step 2: Convert to fraction form
1,279,411,626.75/1,919,117,440.13 = 310,063,242.75/x - Step 3: Cross multiply
1,279,411,626.75x = 1,919,117,440.13 × 310,063,242.75 - Step 4: Simplify right side
1,279,411,626.75x = 595,047,776,703,236,480 - Step 5: Solve for x
x = 595,047,776,703,236,480/1,279,411,626.75 - Step 6: Final answer
x = 465,094,864.13
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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.