Finding the Fourth Proportional to 873,830.28, 1,205,888.58 and 491,863.08
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Solution
The fourth proportional to 873,830.28, 1,205,888.58 and 491,863.08 is: 678,772.62
Step by Step Solution
- Step 1: Write the proportion equation
873,830.28 : 1,205,888.58 = 491,863.08 : x - Step 2: Convert to fraction form
873,830.28/1,205,888.58 = 491,863.08/x - Step 3: Cross multiply
873,830.28x = 1,205,888.58 × 491,863.08 - Step 4: Simplify right side
873,830.28x = 593,132,071,095.63 - Step 5: Solve for x
x = 593,132,071,095.63/873,830.28 - Step 6: Final answer
x = 678,772.62
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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.