Finding the Fourth Proportional to 643,927.24, 888,575.13 and 357,424.77
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Solution
The fourth proportional to 643,927.24, 888,575.13 and 357,424.77 is: 493,221.50
Step by Step Solution
- Step 1: Write the proportion equation
643,927.24 : 888,575.13 = 357,424.77 : x - Step 2: Convert to fraction form
643,927.24/888,575.13 = 357,424.77/x - Step 3: Cross multiply
643,927.24x = 888,575.13 × 357,424.77 - Step 4: Simplify right side
643,927.24x = 317,598,757,025.10 - Step 5: Solve for x
x = 317,598,757,025.10/643,927.24 - Step 6: Final answer
x = 493,221.50
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.