Finding the Fourth Proportional to 644,473.28, 889,372.68 and 358,020.02
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Solution
The fourth proportional to 644,473.28, 889,372.68 and 358,020.02 is: 494,067.38
Step by Step Solution
- Step 1: Write the proportion equation
644,473.28 : 889,372.68 = 358,020.02 : x - Step 2: Convert to fraction form
644,473.28/889,372.68 = 358,020.02/x - Step 3: Cross multiply
644,473.28x = 889,372.68 × 358,020.02 - Step 4: Simplify right side
644,473.28x = 318,413,224,681.05 - Step 5: Solve for x
x = 318,413,224,681.05/644,473.28 - Step 6: Final answer
x = 494,067.38
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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.