Finding the Fourth Proportional to 1,704,653,489.80, 2,556,980,234.70 and 786,323,441.80
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Solution
The fourth proportional to 1,704,653,489.80, 2,556,980,234.70 and 786,323,441.80 is: 1,179,485,162.70
Step by Step Solution
- Step 1: Write the proportion equation
1,704,653,489.80 : 2,556,980,234.70 = 786,323,441.80 : x - Step 2: Convert to fraction form
1,704,653,489.80/2,556,980,234.70 = 786,323,441.80/x - Step 3: Cross multiply
1,704,653,489.80x = 2,556,980,234.70 × 786,323,441.80 - Step 4: Simplify right side
1,704,653,489.80x = 2,010,613,498,763,875,584 - Step 5: Solve for x
x = 2,010,613,498,763,875,584/1,704,653,489.80 - Step 6: Final answer
x = 1,179,485,162.70
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1.5x scale
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.