Finding the Fourth Proportional to 644,818.30, 888,911.42 and 450,623.09
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Solution
The fourth proportional to 644,818.30, 888,911.42 and 450,623.09 is: 621,204.48
Step by Step Solution
- Step 1: Write the proportion equation
644,818.30 : 888,911.42 = 450,623.09 : x - Step 2: Convert to fraction form
644,818.30/888,911.42 = 450,623.09/x - Step 3: Cross multiply
644,818.30x = 888,911.42 × 450,623.09 - Step 4: Simplify right side
644,818.30x = 400,564,014,165.52 - Step 5: Solve for x
x = 400,564,014,165.52/644,818.30 - Step 6: Final answer
x = 621,204.48
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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.