Finding the Fourth Proportional to 644,775.28, 889,790.34 and 358,322.08
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Solution
The fourth proportional to 644,775.28, 889,790.34 and 358,322.08 is: 494,484.72
Step by Step Solution
- Step 1: Write the proportion equation
644,775.28 : 889,790.34 = 358,322.08 : x - Step 2: Convert to fraction form
644,775.28/889,790.34 = 358,322.08/x - Step 3: Cross multiply
644,775.28x = 889,790.34 × 358,322.08 - Step 4: Simplify right side
644,775.28x = 318,831,525,392.71 - Step 5: Solve for x
x = 318,831,525,392.71/644,775.28 - Step 6: Final answer
x = 494,484.72
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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.