Finding the Fourth Proportional to 644,951.48, 889,994.70 and 358,461.68
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Solution
The fourth proportional to 644,951.48, 889,994.70 and 358,461.68 is: 494,655.81
Step by Step Solution
- Step 1: Write the proportion equation
644,951.48 : 889,994.70 = 358,461.68 : x - Step 2: Convert to fraction form
644,951.48/889,994.70 = 358,461.68/x - Step 3: Cross multiply
644,951.48x = 889,994.70 × 358,461.68 - Step 4: Simplify right side
644,951.48x = 319,028,995,353.10 - Step 5: Solve for x
x = 319,028,995,353.10/644,951.48 - Step 6: Final answer
x = 494,655.81
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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.