Finding the Fourth Proportional to 1,210,157,509.36, 1,815,764,258.81 and 423,775,573.81
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Solution
The fourth proportional to 1,210,157,509.36, 1,815,764,258.81 and 423,775,573.81 is: 635,848,255.07
Step by Step Solution
- Step 1: Write the proportion equation
1,210,157,509.36 : 1,815,764,258.81 = 423,775,573.81 : x - Step 2: Convert to fraction form
1,210,157,509.36/1,815,764,258.81 = 423,775,573.81/x - Step 3: Cross multiply
1,210,157,509.36x = 1,815,764,258.81 × 423,775,573.81 - Step 4: Simplify right side
1,210,157,509.36x = 769,476,540,680,897,024 - Step 5: Solve for x
x = 769,476,540,680,897,024/1,210,157,509.36 - Step 6: Final answer
x = 635,848,255.07
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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.