Finding the Fourth Proportional to 1,021,620,568.92, 1,409,836,331.48 and 551,721,844.48
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Solution
The fourth proportional to 1,021,620,568.92, 1,409,836,331.48 and 551,721,844.48 is: 761,376,116.42
Step by Step Solution
- Step 1: Write the proportion equation
1,021,620,568.92 : 1,409,836,331.48 = 551,721,844.48 : x - Step 2: Convert to fraction form
1,021,620,568.92/1,409,836,331.48 = 551,721,844.48/x - Step 3: Cross multiply
1,021,620,568.92x = 1,409,836,331.48 × 551,721,844.48 - Step 4: Simplify right side
1,021,620,568.92x = 777,837,501,219,062,272 - Step 5: Solve for x
x = 777,837,501,219,062,272/1,021,620,568.92 - Step 6: Final answer
x = 761,376,116.42
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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.