Finding the Fourth Proportional to 909,090,910.68, 1,254,544,909.05 and 491,403,208.28
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Solution
The fourth proportional to 909,090,910.68, 1,254,544,909.05 and 491,403,208.28 is: 678,136,131.37
Step by Step Solution
- Step 1: Write the proportion equation
909,090,910.68 : 1,254,544,909.05 = 491,403,208.28 : x - Step 2: Convert to fraction form
909,090,910.68/1,254,544,909.05 = 491,403,208.28/x - Step 3: Cross multiply
909,090,910.68x = 1,254,544,909.05 × 491,403,208.28 - Step 4: Simplify right side
909,090,910.68x = 616,487,393,234,105,472 - Step 5: Solve for x
x = 616,487,393,234,105,472/909,090,910.68 - Step 6: Final answer
x = 678,136,131.37
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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.