Finding the Fourth Proportional to 717,143,649.48, 989,632,108.80 and 399,587,487.84
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Solution
The fourth proportional to 717,143,649.48, 989,632,108.80 and 399,587,487.84 is: 551,416,175.17
Step by Step Solution
- Step 1: Write the proportion equation
717,143,649.48 : 989,632,108.80 = 399,587,487.84 : x - Step 2: Convert to fraction form
717,143,649.48/989,632,108.80 = 399,587,487.84/x - Step 3: Cross multiply
717,143,649.48x = 989,632,108.80 × 399,587,487.84 - Step 4: Simplify right side
717,143,649.48x = 395,444,608,241,193,536 - Step 5: Solve for x
x = 395,444,608,241,193,536/717,143,649.48 - Step 6: Final answer
x = 551,416,175.17
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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.