Finding the Fourth Proportional to 874,073,138.40, 1,311,109,707.60 and 868,971,304.80
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Solution
The fourth proportional to 874,073,138.40, 1,311,109,707.60 and 868,971,304.80 is: 1,303,456,957.20
Step by Step Solution
- Step 1: Write the proportion equation
874,073,138.40 : 1,311,109,707.60 = 868,971,304.80 : x - Step 2: Convert to fraction form
874,073,138.40/1,311,109,707.60 = 868,971,304.80/x - Step 3: Cross multiply
874,073,138.40x = 1,311,109,707.60 × 868,971,304.80 - Step 4: Simplify right side
874,073,138.40x = 1,139,316,713,349,118,336 - Step 5: Solve for x
x = 1,139,316,713,349,118,336/874,073,138.40 - Step 6: Final answer
x = 1,303,456,957.20
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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.