Finding the Fourth Proportional to 1,418,481,938.40, 2,127,722,907.60 and 874,286,354.40
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Solution
The fourth proportional to 1,418,481,938.40, 2,127,722,907.60 and 874,286,354.40 is: 1,311,429,531.60
Step by Step Solution
- Step 1: Write the proportion equation
1,418,481,938.40 : 2,127,722,907.60 = 874,286,354.40 : x - Step 2: Convert to fraction form
1,418,481,938.40/2,127,722,907.60 = 874,286,354.40/x - Step 3: Cross multiply
1,418,481,938.40x = 2,127,722,907.60 × 874,286,354.40 - Step 4: Simplify right side
1,418,481,938.40x = 1,860,239,104,058,971,904 - Step 5: Solve for x
x = 1,860,239,104,058,971,904/1,418,481,938.40 - Step 6: Final answer
x = 1,311,429,531.60
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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.