Finding the Fourth Proportional to 711,877,915.36, 982,399,381.44 and 394,343,024.80
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Solution
The fourth proportional to 711,877,915.36, 982,399,381.44 and 394,343,024.80 is: 544,197,727.28
Step by Step Solution
- Step 1: Write the proportion equation
711,877,915.36 : 982,399,381.44 = 394,343,024.80 : x - Step 2: Convert to fraction form
711,877,915.36/982,399,381.44 = 394,343,024.80/x - Step 3: Cross multiply
711,877,915.36x = 982,399,381.44 × 394,343,024.80 - Step 4: Simplify right side
711,877,915.36x = 387,402,343,638,698,624 - Step 5: Solve for x
x = 387,402,343,638,698,624/711,877,915.36 - Step 6: Final answer
x = 544,197,727.28
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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.