Finding the Fourth Proportional to 1,203,391,487.67, 1,660,069,072.08 and 785,948,125.11
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Solution
The fourth proportional to 1,203,391,487.67, 1,660,069,072.08 and 785,948,125.11 is: 1,084,209,243.73
Step by Step Solution
- Step 1: Write the proportion equation
1,203,391,487.67 : 1,660,069,072.08 = 785,948,125.11 : x - Step 2: Convert to fraction form
1,203,391,487.67/1,660,069,072.08 = 785,948,125.11/x - Step 3: Cross multiply
1,203,391,487.67x = 1,660,069,072.08 × 785,948,125.11 - Step 4: Simplify right side
1,203,391,487.67x = 1,304,728,174,754,373,376 - Step 5: Solve for x
x = 1,304,728,174,754,373,376/1,203,391,487.67 - Step 6: Final answer
x = 1,084,209,243.73
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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.