Finding the Fourth Proportional to 644,489.28, 889,394.76 and 358,036.08
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Solution
The fourth proportional to 644,489.28, 889,394.76 and 358,036.08 is: 494,089.54
Step by Step Solution
- Step 1: Write the proportion equation
644,489.28 : 889,394.76 = 358,036.08 : x - Step 2: Convert to fraction form
644,489.28/889,394.76 = 358,036.08/x - Step 3: Cross multiply
644,489.28x = 889,394.76 × 358,036.08 - Step 4: Simplify right side
644,489.28x = 318,435,413,442.94 - Step 5: Solve for x
x = 318,435,413,442.94/644,489.28 - Step 6: Final answer
x = 494,089.54
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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.