Finding the Fourth Proportional to 644,691.36, 889,303.44 and 402,553.56
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Solution
The fourth proportional to 644,691.36, 889,303.44 and 402,553.56 is: 555,292.48
Step by Step Solution
- Step 1: Write the proportion equation
644,691.36 : 889,303.44 = 402,553.56 : x - Step 2: Convert to fraction form
644,691.36/889,303.44 = 402,553.56/x - Step 3: Cross multiply
644,691.36x = 889,303.44 × 402,553.56 - Step 4: Simplify right side
644,691.36x = 357,992,265,692.25 - Step 5: Solve for x
x = 357,992,265,692.25/644,691.36 - Step 6: Final answer
x = 555,292.48
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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.