Finding the Fourth Proportional to 1,310,795,807.76, 1,808,924,880.48 and 716,118,809.28
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Solution
The fourth proportional to 1,310,795,807.76, 1,808,924,880.48 and 716,118,809.28 is: 988,258,524.95
Step by Step Solution
- Step 1: Write the proportion equation
1,310,795,807.76 : 1,808,924,880.48 = 716,118,809.28 : x - Step 2: Convert to fraction form
1,310,795,807.76/1,808,924,880.48 = 716,118,809.28/x - Step 3: Cross multiply
1,310,795,807.76x = 1,808,924,880.48 × 716,118,809.28 - Step 4: Simplify right side
1,310,795,807.76x = 1,295,405,131,486,304,000 - Step 5: Solve for x
x = 1,295,405,131,486,304,000/1,310,795,807.76 - Step 6: Final answer
x = 988,258,524.95
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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.