Finding the Fourth Proportional to 768,555.70, 1,152,875.58 and 319,321.99
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Solution
The fourth proportional to 768,555.70, 1,152,875.58 and 319,321.99 is: 479,000.45
Step by Step Solution
- Step 1: Write the proportion equation
768,555.70 : 1,152,875.58 = 319,321.99 : x - Step 2: Convert to fraction form
768,555.70/1,152,875.58 = 319,321.99/x - Step 3: Cross multiply
768,555.70x = 1,152,875.58 × 319,321.99 - Step 4: Simplify right side
768,555.70x = 368,138,524,428.00 - Step 5: Solve for x
x = 368,138,524,428.00/768,555.70 - Step 6: Final answer
x = 479,000.45
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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.