Finding the Fourth Proportional to 912,323,207.46, 1,259,030,816.80 and 515,905,504.14
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Solution
The fourth proportional to 912,323,207.46, 1,259,030,816.80 and 515,905,504.14 is: 711,963,614.38
Step by Step Solution
- Step 1: Write the proportion equation
912,323,207.46 : 1,259,030,816.80 = 515,905,504.14 : x - Step 2: Convert to fraction form
912,323,207.46/1,259,030,816.80 = 515,905,504.14/x - Step 3: Cross multiply
912,323,207.46x = 1,259,030,816.80 × 515,905,504.14 - Step 4: Simplify right side
912,323,207.46x = 649,540,928,268,999,936 - Step 5: Solve for x
x = 649,540,928,268,999,936/912,323,207.46 - Step 6: Final answer
x = 711,963,614.38
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Half scale
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Double scale
Find fourth proportional to 912,323,208.46, 1,259,030,818.18 and 515,905,505.14
Similar ratio
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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.