Finding the Fourth Proportional to 644,395.14, 889,265.34 and 357,941.88
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Solution
The fourth proportional to 644,395.14, 889,265.34 and 357,941.88 is: 493,959.82
Step by Step Solution
- Step 1: Write the proportion equation
644,395.14 : 889,265.34 = 357,941.88 : x - Step 2: Convert to fraction form
644,395.14/889,265.34 = 357,941.88/x - Step 3: Cross multiply
644,395.14x = 889,265.34 × 357,941.88 - Step 4: Simplify right side
644,395.14x = 318,305,307,618.44 - Step 5: Solve for x
x = 318,305,307,618.44/644,395.14 - Step 6: Final answer
x = 493,959.82
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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.