Finding the Fourth Proportional to 644,454.96, 889,204.68 and 389,800.68
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Solution
The fourth proportional to 644,454.96, 889,204.68 and 389,800.68 is: 537,838.34
Step by Step Solution
- Step 1: Write the proportion equation
644,454.96 : 889,204.68 = 389,800.68 : x - Step 2: Convert to fraction form
644,454.96/889,204.68 = 389,800.68/x - Step 3: Cross multiply
644,454.96x = 889,204.68 × 389,800.68 - Step 4: Simplify right side
644,454.96x = 346,612,588,923.18 - Step 5: Solve for x
x = 346,612,588,923.18/644,454.96 - Step 6: Final answer
x = 537,838.34
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1.5x scale
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.