Finding the Fourth Proportional to 644,485.28, 889,389.24 and 358,032.08
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Solution
The fourth proportional to 644,485.28, 889,389.24 and 358,032.08 is: 494,084.02
Step by Step Solution
- Step 1: Write the proportion equation
644,485.28 : 889,389.24 = 358,032.08 : x - Step 2: Convert to fraction form
644,485.28/889,389.24 = 358,032.08/x - Step 3: Cross multiply
644,485.28x = 889,389.24 × 358,032.08 - Step 4: Simplify right side
644,485.28x = 318,429,879,526.82 - Step 5: Solve for x
x = 318,429,879,526.82/644,485.28 - Step 6: Final answer
x = 494,084.02
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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.