Finding the Fourth Proportional to 1,203,391,739.38, 1,660,069,419.54 and 785,948,376.82
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Solution
The fourth proportional to 1,203,391,739.38, 1,660,069,419.54 and 785,948,376.82 is: 1,084,209,591.11
Step by Step Solution
- Step 1: Write the proportion equation
1,203,391,739.38 : 1,660,069,419.54 = 785,948,376.82 : x - Step 2: Convert to fraction form
1,203,391,739.38/1,660,069,419.54 = 785,948,376.82/x - Step 3: Cross multiply
1,203,391,739.38x = 1,660,069,419.54 × 785,948,376.82 - Step 4: Simplify right side
1,203,391,739.38x = 1,304,728,865,695,982,592 - Step 5: Solve for x
x = 1,304,728,865,695,982,592/1,203,391,739.38 - Step 6: Final answer
x = 1,084,209,591.11
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1.5x scale
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.