Finding the Fourth Proportional to 389,787.91, 584,210.98 and 189,808.63
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Solution
The fourth proportional to 389,787.91, 584,210.98 and 189,808.63 is: 284,483.65
Step by Step Solution
- Step 1: Write the proportion equation
389,787.91 : 584,210.98 = 189,808.63 : x - Step 2: Convert to fraction form
389,787.91/584,210.98 = 189,808.63/x - Step 3: Cross multiply
389,787.91x = 584,210.98 × 189,808.63 - Step 4: Simplify right side
389,787.91x = 110,888,285,744.76 - Step 5: Solve for x
x = 110,888,285,744.76/389,787.91 - Step 6: Final answer
x = 284,483.65
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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.