Finding the Fourth Proportional to 644,087.08, 887,378.07 and 498,391.93
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Solution
The fourth proportional to 644,087.08, 887,378.07 and 498,391.93 is: 686,649.50
Step by Step Solution
- Step 1: Write the proportion equation
644,087.08 : 887,378.07 = 498,391.93 : x - Step 2: Convert to fraction form
644,087.08/887,378.07 = 498,391.93/x - Step 3: Cross multiply
644,087.08x = 887,378.07 × 498,391.93 - Step 4: Simplify right side
644,087.08x = 442,262,068,946.98 - Step 5: Solve for x
x = 442,262,068,946.98/644,087.08 - Step 6: Final answer
x = 686,649.50
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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.