Finding the Fourth Proportional to 519,987.36, 717,587.28 and 305,130.96
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Solution
The fourth proportional to 519,987.36, 717,587.28 and 305,130.96 is: 421,083.50
Step by Step Solution
- Step 1: Write the proportion equation
519,987.36 : 717,587.28 = 305,130.96 : x - Step 2: Convert to fraction form
519,987.36/717,587.28 = 305,130.96/x - Step 3: Cross multiply
519,987.36x = 717,587.28 × 305,130.96 - Step 4: Simplify right side
519,987.36x = 218,958,095,630.19 - Step 5: Solve for x
x = 218,958,095,630.19/519,987.36 - Step 6: Final answer
x = 421,083.50
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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.