Finding the Fourth Proportional to 621,910.98, 858,280.74 and 350,005.05
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Solution
The fourth proportional to 621,910.98, 858,280.74 and 350,005.05 is: 483,031.50
Step by Step Solution
- Step 1: Write the proportion equation
621,910.98 : 858,280.74 = 350,005.05 : x - Step 2: Convert to fraction form
621,910.98/858,280.74 = 350,005.05/x - Step 3: Cross multiply
621,910.98x = 858,280.74 × 350,005.05 - Step 4: Simplify right side
621,910.98x = 300,402,593,317.74 - Step 5: Solve for x
x = 300,402,593,317.74/621,910.98 - Step 6: Final answer
x = 483,031.50
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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.