Finding the Fourth Proportional to 1,345,291,210.45, 2,017,936,815.68 and 1,287,178,137.10
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Solution
The fourth proportional to 1,345,291,210.45, 2,017,936,815.68 and 1,287,178,137.10 is: 1,930,767,205.65
Step by Step Solution
- Step 1: Write the proportion equation
1,345,291,210.45 : 2,017,936,815.68 = 1,287,178,137.10 : x - Step 2: Convert to fraction form
1,345,291,210.45/2,017,936,815.68 = 1,287,178,137.10/x - Step 3: Cross multiply
1,345,291,210.45x = 2,017,936,815.68 × 1,287,178,137.10 - Step 4: Simplify right side
1,345,291,210.45x = 2,597,444,151,192,488,448 - Step 5: Solve for x
x = 2,597,444,151,192,488,448/1,345,291,210.45 - Step 6: Final answer
x = 1,930,767,205.65
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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.