Finding the Fourth Proportional to 717,149,795.36, 989,656,657.56 and 399,623,424.44
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Solution
The fourth proportional to 717,149,795.36, 989,656,657.56 and 399,623,424.44 is: 551,474,719.89
Step by Step Solution
- Step 1: Write the proportion equation
717,149,795.36 : 989,656,657.56 = 399,623,424.44 : x - Step 2: Convert to fraction form
717,149,795.36/989,656,657.56 = 399,623,424.44/x - Step 3: Cross multiply
717,149,795.36x = 989,656,657.56 × 399,623,424.44 - Step 4: Simplify right side
717,149,795.36x = 395,489,982,509,023,296 - Step 5: Solve for x
x = 395,489,982,509,023,296/717,149,795.36 - Step 6: Final answer
x = 551,474,719.89
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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.