Finding the Fourth Proportional to 1,692,780,072.48, 2,335,824,964.82 and 939,990,898.08
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Solution
The fourth proportional to 1,692,780,072.48, 2,335,824,964.82 and 939,990,898.08 is: 1,297,069,975.09
Step by Step Solution
- Step 1: Write the proportion equation
1,692,780,072.48 : 2,335,824,964.82 = 939,990,898.08 : x - Step 2: Convert to fraction form
1,692,780,072.48/2,335,824,964.82 = 939,990,898.08/x - Step 3: Cross multiply
1,692,780,072.48x = 2,335,824,964.82 × 939,990,898.08 - Step 4: Simplify right side
1,692,780,072.48x = 2,195,654,206,438,836,480 - Step 5: Solve for x
x = 2,195,654,206,438,836,480/1,692,780,072.48 - Step 6: Final answer
x = 1,297,069,975.09
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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.