Finding the Fourth Proportional to 1,225,948,072.88, 1,691,807,895.68 and 669,031,119.95
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Solution
The fourth proportional to 1,225,948,072.88, 1,691,807,895.68 and 669,031,119.95 is: 923,262,702.73
Step by Step Solution
- Step 1: Write the proportion equation
1,225,948,072.88 : 1,691,807,895.68 = 669,031,119.95 : x - Step 2: Convert to fraction form
1,225,948,072.88/1,691,807,895.68 = 669,031,119.95/x - Step 3: Cross multiply
1,225,948,072.88x = 1,691,807,895.68 × 669,031,119.95 - Step 4: Simplify right side
1,225,948,072.88x = 1,131,872,131,175,239,040 - Step 5: Solve for x
x = 1,131,872,131,175,239,040/1,225,948,072.88 - Step 6: Final answer
x = 923,262,702.73
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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.