Finding the Fourth Proportional to 644,547.94, 889,558.17 and 389,900.95
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Solution
The fourth proportional to 644,547.94, 889,558.17 and 389,900.95 is: 538,112.92
Step by Step Solution
- Step 1: Write the proportion equation
644,547.94 : 889,558.17 = 389,900.95 : x - Step 2: Convert to fraction form
644,547.94/889,558.17 = 389,900.95/x - Step 3: Cross multiply
644,547.94x = 889,558.17 × 389,900.95 - Step 4: Simplify right side
644,547.94x = 346,839,571,877.24 - Step 5: Solve for x
x = 346,839,571,877.24/644,547.94 - Step 6: Final answer
x = 538,112.92
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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.