Finding the Fourth Proportional to 717,226.18, 989,778.60 and 394,947.70
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Solution
The fourth proportional to 717,226.18, 989,778.60 and 394,947.70 is: 545,031.39
Step by Step Solution
- Step 1: Write the proportion equation
717,226.18 : 989,778.60 = 394,947.70 : x - Step 2: Convert to fraction form
717,226.18/989,778.60 = 394,947.70/x - Step 3: Cross multiply
717,226.18x = 989,778.60 × 394,947.70 - Step 4: Simplify right side
717,226.18x = 390,910,781,579.22 - Step 5: Solve for x
x = 390,910,781,579.22/717,226.18 - Step 6: Final answer
x = 545,031.39
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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.