Finding the Fourth Proportional to 619,990.99, 855,485.68 and 365,307.55
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Solution
The fourth proportional to 619,990.99, 855,485.68 and 365,307.55 is: 504,064.39
Step by Step Solution
- Step 1: Write the proportion equation
619,990.99 : 855,485.68 = 365,307.55 : x - Step 2: Convert to fraction form
619,990.99/855,485.68 = 365,307.55/x - Step 3: Cross multiply
619,990.99x = 855,485.68 × 365,307.55 - Step 4: Simplify right side
619,990.99x = 312,515,377,820.88 - Step 5: Solve for x
x = 312,515,377,820.88/619,990.99 - Step 6: Final answer
x = 504,064.39
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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.