Finding the Fourth Proportional to 717,959.49, 990,830.74 and 412,134.87
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Solution
The fourth proportional to 717,959.49, 990,830.74 and 412,134.87 is: 568,772.90
Step by Step Solution
- Step 1: Write the proportion equation
717,959.49 : 990,830.74 = 412,134.87 : x - Step 2: Convert to fraction form
717,959.49/990,830.74 = 412,134.87/x - Step 3: Cross multiply
717,959.49x = 990,830.74 × 412,134.87 - Step 4: Simplify right side
717,959.49x = 408,355,898,221.90 - Step 5: Solve for x
x = 408,355,898,221.90/717,959.49 - Step 6: Final answer
x = 568,772.90
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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.