Finding the Fourth Proportional to 678,991,626.55, 1,018,600,850.80 and 212,560,226.36
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Solution
The fourth proportional to 678,991,626.55, 1,018,600,850.80 and 212,560,226.36 is: 318,875,843.17
Step by Step Solution
- Step 1: Write the proportion equation
678,991,626.55 : 1,018,600,850.80 = 212,560,226.36 : x - Step 2: Convert to fraction form
678,991,626.55/1,018,600,850.80 = 212,560,226.36/x - Step 3: Cross multiply
678,991,626.55x = 1,018,600,850.80 × 212,560,226.36 - Step 4: Simplify right side
678,991,626.55x = 216,514,027,417,068,000 - Step 5: Solve for x
x = 216,514,027,417,068,000/678,991,626.55 - Step 6: Final answer
x = 318,875,843.17
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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.