Finding the Fourth Proportional to 1,345,291,203.20, 2,017,936,804.80 and 1,287,178,129.85
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Solution
The fourth proportional to 1,345,291,203.20, 2,017,936,804.80 and 1,287,178,129.85 is: 1,930,767,194.78
Step by Step Solution
- Step 1: Write the proportion equation
1,345,291,203.20 : 2,017,936,804.80 = 1,287,178,129.85 : x - Step 2: Convert to fraction form
1,345,291,203.20/2,017,936,804.80 = 1,287,178,129.85/x - Step 3: Cross multiply
1,345,291,203.20x = 2,017,936,804.80 × 1,287,178,129.85 - Step 4: Simplify right side
1,345,291,203.20x = 2,597,444,122,557,948,416 - Step 5: Solve for x
x = 2,597,444,122,557,948,416/1,345,291,203.20 - Step 6: Final answer
x = 1,930,767,194.78
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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.