Finding the Fourth Proportional to 515,014.21, 710,549.48 and 310,987.62
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Solution
The fourth proportional to 515,014.21, 710,549.48 and 310,987.62 is: 429,060.18
Step by Step Solution
- Step 1: Write the proportion equation
515,014.21 : 710,549.48 = 310,987.62 : x - Step 2: Convert to fraction form
515,014.21/710,549.48 = 310,987.62/x - Step 3: Cross multiply
515,014.21x = 710,549.48 × 310,987.62 - Step 4: Simplify right side
515,014.21x = 220,972,091,677.44 - Step 5: Solve for x
x = 220,972,091,677.44/515,014.21 - Step 6: Final answer
x = 429,060.18
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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.