Finding the Fourth Proportional to 643,426.59, 887,929.74 and 356,946.68
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Solution
The fourth proportional to 643,426.59, 887,929.74 and 356,946.68 is: 492,586.99
Step by Step Solution
- Step 1: Write the proportion equation
643,426.59 : 887,929.74 = 356,946.68 : x - Step 2: Convert to fraction form
643,426.59/887,929.74 = 356,946.68/x - Step 3: Cross multiply
643,426.59x = 887,929.74 × 356,946.68 - Step 4: Simplify right side
643,426.59x = 316,943,568,326.62 - Step 5: Solve for x
x = 316,943,568,326.62/643,426.59 - Step 6: Final answer
x = 492,586.99
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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.