Finding the Fourth Proportional to 643,320.02, 887,782.50 and 356,840.09
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Solution
The fourth proportional to 643,320.02, 887,782.50 and 356,840.09 is: 492,439.81
Step by Step Solution
- Step 1: Write the proportion equation
643,320.02 : 887,782.50 = 356,840.09 : x - Step 2: Convert to fraction form
643,320.02/887,782.50 = 356,840.09/x - Step 3: Cross multiply
643,320.02x = 887,782.50 × 356,840.09 - Step 4: Simplify right side
643,320.02x = 316,796,387,200.43 - Step 5: Solve for x
x = 316,796,387,200.43/643,320.02 - Step 6: Final answer
x = 492,439.81
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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.