Finding the Fourth Proportional to 637,686.21, 879,966.60 and 351,206.30
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Solution
The fourth proportional to 637,686.21, 879,966.60 and 351,206.30 is: 484,642.45
Step by Step Solution
- Step 1: Write the proportion equation
637,686.21 : 879,966.60 = 351,206.30 : x - Step 2: Convert to fraction form
637,686.21/879,966.60 = 351,206.30/x - Step 3: Cross multiply
637,686.21x = 879,966.60 × 351,206.30 - Step 4: Simplify right side
637,686.21x = 309,049,807,553.72 - Step 5: Solve for x
x = 309,049,807,553.72/637,686.21 - Step 6: Final answer
x = 484,642.45
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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.